Yahya related to me from Malik from Ziyad ibn Abi Ziyad from Talha ibn Ubaydullah ibn Kariz that the Messenger of Allah, may Allah bless him and grant him peace, said, "The best dua is dua on the day of Arafa, and the best thing that I or the Prophets before me have said is 'There is no god but Allah, alone, without any partner' (La ilaha illa'llah, wahdahu la sharika lah.)"

"I was present when 'Ali (may Allah be well pleased with him) had an animal brought for him to ride. When he placed his foot in the stirrup, he said: “In the Name of Allah [Bismillah],” and when he settled on its back, he said: “Praise be to Allah!” Then he said: “Glory be to the One who has placed this at our disposal, for we would not have been equal to the task [Subhanalladhi sakhkhara la-na hadha wa ma kunna la-hu muqrinin], and to our Lord we are surely returning [wa inna ila Rabbina la-munqalibun]. (Al-Qur'an;43:13-14)Then he said: “Praise be to Allah,” three times, and: “Allah is Supremely Great,” three times, then: “Glory be to You! I have wronged myself, so forgive me, for no one forgives sins but You!” Then he laughed, so I said to him: “What has made you laugh, O Commander of the Believers?” He said: “I saw Allah’s Messenger (Allah bless him and give him peace) do just as I did now, after which he laughed, so I said: "What has made you laugh, O Messenger of Allah?" He replied: ‘Your Lord surely marvels at His servant when he says: “My Lord, forgive me my sins, knowing that no one but He forgives sins'!”

"When we sat during the prayer with the Messenger of Allah (SAW), we used to say: 'Peace (salam) be upon Allah(SWT), peace be upon so-and-so and so-and-so.' The Messenger of Allah (SAW) said: 'Do not say peace (salam) be upon Allah (SWT), for Allah (SWT) is As-Salam (the Source of peace; the One free from all faults). Rather say: At-tahiyyatu lillahi wasalawatu wat-tayibaat, as-salamu 'alaika ayah-Nabiyyu wa rahmatAllahi wa baraktuhu. As-salamu 'alaina a 'ala ibad illahis-salihin (All compliments, prayers and pure words are due to Allah. Peace be upon you O Prophet, and the mercy of Allah and His blessings. Peace be upon us and upon the righteous slaves of Allah.) If you say that, it will be for every righteous slave in the heavens and on earth, "ashadu an la ilaha ill Allah, wa ashhadu anna Muhammadan 'abduhu wa rasuluhu (I bear witness that that none has the right to be worshipped except Allah, and I bear witness that Muhammad is His slave and messenger.) Then let him choose any supplication that he likes to say after that.'"

“The Messenger of Allah (saw) addressed us and explained the Sunnah for us, and he taught us our prayer. He said: ‘When you perform prayer, and you are sitting, let the first thing you say be: At-Tahiyyatut-tayyibatus-salawatu lillah; as-salamu ‘alayka ayyuhan-Nabiyyu wa rahmatullahi wa barakatuhu; as-salamu ‘alayna wa ‘ala ‘ibadillahis-salihin. Ashhadu an la ilaha illallah wa ashhadu anna Muhammadan ‘abduhu wa Rasuluhu (All compliments, good words and prayers are due to Allah; peace be upon you, O Prophet, and the mercy of Allah and His blessings; peace be upon us and upon the righteous slaves of Allah. I bear witness that none has the right to be worshipped but Allah and I bear witness that Muhammad is His slave and Messenger). Seven phrases which are the greeting of the prayer.’”

"I heard Aws say: 'I came to the Messenger of Allah [SAW] among the delegation of Thaqif and I was with him in a tent. Everyone in the tent had gone to sleep except him and I. A man came and whispered to him, and he said: Go and kill him. Then he said: Does he not bear witness to La ilaha illallah (there is none worthy of worship except Allah) and that I am the Messenger of Allah? He said: He does bear witness to that. The Messenger of Allah [SAW] said: Leave him alone. Then he said: I have been commanded to fight the people until they say La ilaha illallah. If they say it, then their blood and their wealth become forbidden to me, except for a right that is due. (One of the narrators) Muhammad said: I said to Shu'bah: 'Doesn't the Hadith contain: Does he not testify to La ilaha illallah (there is none worthy of worship except Allah) and that I am the Messenger of Allah?' He said: 'I think it is both, but I do not know.'"

Whenever he (mu’adh b. jabal) sat in a meeting for preaching, he would say: Allah is a just arbiter; those who doubt would perish. One day Mu’adh b. jabal said: In the times after you there would be trails in which riches would be abundant. During these trails the Quran would be easy so much so that every believer, hypocrite, man, woman, young, grown up, slave and free man will learn it. Then a man might say: What happened with the people that they do not follow me while I read the Quran? They are not going to follow me until I introduce a novelty for them other than it. So avoid that which is innovated (in religion), for whichever is innovated is an error. I warn you of the deviation of a scholar from right guidance, for sometimes Satan utters a word of error through the tongue of a scholar; and sometimes a hypocrites may speak a word of truth. I said to Mu’adh b. jabal: I am at a loss to understand may Allah have mercy on you that a learned man sometimes may speak a word of error and a hypocrite may speak a word of truth. He replied: Yes, avoid the speech of a learned man on distract you from him (the learned), for it is possible that he may withdraw (from these well-known things), and you get the truth when you hear it, for truth has light.

Abu Dawud said: In this tradition Ma’mar on the authority of al-Zuhrl said: The words “wa la yun iyannaka” instead of “wa la yuthniyannaka,” with the same meaning: “it may not distract you” salih b. Kaisan on the authority of al-Zurhrl said in this tradition the words “al-mushtaharat” (well-know things). He also said the word “La yuthniyannaka” as ‘Uqail mentioned. Ibn ishaq, on the authority of al-Zuhri, said: Yes, if you are doubtful about the speech of a scholar until you say: WHAT did he mean by this word?

There is no harm if you do not do that, for it (the birth of the child) is something ordained. Muhammad (one of the narrators) said: (The words) La 'alaykum (there is no harm) implies its Prohibition.

"The Prophet would say the following for the Talbiyah: "Labbaik Allahumma labbaik. Labbaik la sharika laka labbaik. Innal-hamda wan-ni;mata laka wal-mulk, la sharika laka." ('I respond to Your call O Allah! I respond to Your call. You have no partner. I respond to Your call. All praise, thanks and blessings are for You. All sovereignty is for You. And You have no partners with You).'"

"The final words of the Adhan are: 'Allahu Akbar, Allahu Akbar; La ilaha illallah (Allah is the Greatest, Allah is the Greatest, there is none worthy of worship except Allah.)'"

"Al-Aswad bin Yazid narrated to me from Abu Mahdhurah that the final words of the Adhan are: 'La ilaha illahha (there is none worthy of worship except Allah).'"

"The final words of the Adhan of Bilal were: 'Allahu Akbar, Allahu Akbar, Allahu Akbar; La ilaha illallah (Allah is the Greatest, Allah is the Greatest, there is none worthy of worship except Allah.)'"

"The Messenger of Allah taught me the Adhan with nineteen phrases and the Iqamah with seventeen. The Adhan is: Allahu Akbar Allahu Akbar, Allahu Akbar Allahu Akbar; Ash-hadu an la ilaha illallah, Ash-hadu an la ilaha illallah; Ash-hadu anna Muhammadan Rasulullah, Ash-hadu anna Muhammadan Rasulullah; Ash-hadu an la ilaha illallah, Ash-hadu an la ilaha illallah; Ash-hadu anna Muhammadan Rasulullah, Ash-hadu anna Muhammadan Rasulullah; Hayya 'alal-salah, Hayya 'alal-salah; Hayya 'alal-falah, Hayya 'alal-falah; Allahu Akbar Allahu Akbar; La ilaha illallah (Allah is the Most great, Allah is the most Great, Allah is the most Great, Allah is the most Great; I bear witness that none has the right to be worshipped but Allah, I bear witness that none has the right to be worshipped but Allah; I bear witness that Muhammad is the Messenger of Allah, I bear witness that Muhammad is the Messenger of Allah; I bear witness that none has the right to be worshipped but Allah, I bear witness that none has the right to be worshipped but Allah; I bear witness that Muhammad is the Messenger of Allah, I bear witness that Muhammad is the Messenger of Allah; Come to the Prayer, Come to the Prayer; Come to the prosperity, Come to the prosperity; Allah is the Most great, Allah is the Most Great; None has the right to be worshipped but Allah). And the Iqamah is seventeen phrases: Allahu Akbar Allahu Akbar, Allahu Akbar Allahu Akbar; Ash-hadu an la ilaha illallah, Ash-hadu an la ilaha illallah; Ash-hadu anna Muhammadan Rasulullah, Ash-hadu anna Muhammadan Rasulullah; Hayya 'alal-salah, Hayya 'alal-salah; Hayya 'alal-falah, Hayya 'alal-falah; Qad qamatis-salah, qad qamatis-salah; Allahu Akbar Allahu Akbar; La ilaha illallah (Allah is the Most great, Allah is the most Great, Allah is the most Great, Allah is the most Great; I bear witness that none has the right to be worshipped but Allah, I bear witness that none has the right to be worshipped but Allah; I bear witness that Muhammad is the Messenger of Allah, I bear witness that Muhammad is the Messenger of Allah; Come to the Prayer, Come to the Prayer; Come to the prosperity, Come to the prosperity; The prayer is about to begin, the prayer is about to begin; Allah is the Most great, Allah is the Most Great; None has the right to be worshipped but Allah)."

“The Talbiyah of the Messenger of Allah (saw) was: ‘Labbaika Allahumma labbaik, (labbaika) la sharika laka labbaik. Innal-hamd wan-ni’mata laka, wal-mulk. La sharika laka (Here I am, O Allah, here I am. Here I am, You have no partner, here I am. Verily all praise and blessings are Yours, and all sovereignty, You have no partner).’”

"The Prophet (SAW) taught us Khutbat Al-Hajah: Alhamduu lillahi nasta'inuhu wa nastagfiruhu, wa na'udhu billahi min shururi anfusina wa sayi'ati a'malina. Man yahdihillahu fala mudilla lahu wa man yudlil fala hadiya lahu. Wa ashhadu an la ilaha illallahu wa ashhadu anna Muhammadan 'abduhu wa rasuluhu. (Praise be to Allah, we seek His help and His forgiveness. We seek refuge in Allah from the evil of our own souls and from our bad deeds. Whomsoever Allah guides will never be led astray,and whomsoever Allah leaves astray, no one can guide. I bear witness that there is none worthy of worship except Allah, and I bear witness that Muhammad is His slave and Messenger.) Then he recited the following three verses: O you who believe! Fear Allah as He should be feared, and die not except as Muslims; O Mankind! Be dutiful to your Lord, Who created you from a single person, and from him he created his wife, and from them he created many men and women, and fear Allah through Whom you demand your mutual (rights), and (do not cut the relations of) the wombs (kinship). Surely, Allah is Ever an All-Watcher over you); O you who believe! Keep your duty to Allah and fear Him, and speak (always) the truth.)"

"I noticed that the Messenger of Allah (saas) was missing from his bed one night, so I went looking for him, and my hand touched the soles of his feet; he was in the Masjid with his feet upright (prostrating), and he was saying: 'Allahumma inni a'udhu biridaka min sakhatika wa bimu'afatika 'an 'uqubatika, wa a'udhu bika minka, la uhsi thana'an 'alayka, Anta kama athnayta 'ala nafsika (O Allah, I seek refuge in Your pleasure from Your wrath, and in Your forgiveness from Your punishment. I seek refuge in You from You. I cannot praise You enough; You are as You have praised Yourself).'"

"Recite it to me." He said, "Allahu Akbar, Allahu Akbar (Allah is the greatest, Allah is the greatest), Ashhadu an la ilaha illallah (I bear witness that there is none worthy of worship except Allah) - twice. Ashhadu anna Muhammadan Rasulallah (I bear witness that Muhammad is the messenger of Allah) - twice. Then he said in a lower voice which those around him could here: Ashhadu an la ilaha ill-Allah (I bear witness that there is none worthy of worship except Allah) - twice. Ashhadu anna Muhammadan Rasulallah (I bear witness that Muhammad is the messenger of Allah) - twice, Hayya'ala as-salah (come to prayer) - twice, Hayya alal-falah (come to prosperity) - twice, Allahu Akbar Allahu Akbar la ilaha illallah (Allah is the Greatest, Allah is the Greatest, there is none worthy of worship except Allah). [1] Bishir bin Mu'adh who heard it from Ibrahim, and from whom An-Nasa'i is reporting it, is the one who is asking for the Adhan to be recited to him.

"The Messenger of Allah [SAW] said: 'I have been commanded to fight the people until they say La ilaha illallah. If they say it, then their blood and wealth are prohibited for me, except for a right that is due, and their reckoning will be with Allah.'"

The Prophet said: "Instruct your dying to say: (La illaha illallah) 'None has the right to be worshipped but Allah'

‘Urge your dying ones to say La ilaha illallah.”

The Messenger of Allah (ﷺ) liked this soorah: “Glorify the Name of your Lord, the Most High`[al-A`la 87].

"Thumamah bin Uthal Al-Hanafi went to fetch some water that was near the Masjid and performed Ghusl, then he entered the Masjid and said: 'Ashhadu an la ila ha ill-Allah was ashhadu anna Muhammadan 'abduhu wa rasuluh (I bear witness that there is none worthy of worship except Allah and I bear witness that Muhammad is His slave and Messenger), O Muhammad, by Allah! There was no face on the face of the Earth that was more hateful to me than your face, not now your face has become the most beloved of all faces to me. You cavalry captured me and I want to perform 'Umrah. What do you think? The Prophet (PBUH) gave him glad tidings and told him to perform 'Umarah."

"The Messenger of Allah [SAW] said: 'I have been commanded to fight the people until they say La ilaha illallah. If they say it, then their blood and wealth are prohibited for me, except for a right that is due, and their reckoning will be with Allah, the Mighty and Sublime."

Yahya related to me from Malik from Yahya ibn Said from Muhammad ibn Ibrahim ibn al-Harith at-Taymi that A'isha, umm al-muminin said, "I was sleeping by the side of the Messenger of Allah, mayAllah bless him and grant him peace, and I missed him in the night, so I felt for him with my hand and I put my hand on his feet and he was in sajda saying, 'I seek refuge in Your pleasure from Your wrath, and in Your pardon from Your punishment, and in You from You. I cannot enumerate Your praises as You praise Yourself.' "

Audhu bi ridaka min sakhatika, wa bi muafatika min uqubatika wa bika minka, la uhsiy thana'an alayka, anta kama athnayta ala nafsika.

"The Talbiyah of the Messenger of Allah was: "Labbaika Allahumma Labbaik, Labbaika la sharika laka labbaik. Innal-hamda wan-ni'mata laka wal-mulk, la sharika lak (Here I am, O Allah, here I am. Here I am, You have no partner, here I am. Verily all praise and blessings are Yours, and all sovereignty, You have no partner)." And Ibn 'Umar added: "Labbaika Labbaika wasa'daika wal-khayr fi yadika, warraghba' ilaika wal-'aml (Here I am, here I am, and at Your service; all good is in Your hands, seeking Your pleasure and striving for Your sake)."

"Salim told me that his father said: "I heard the Messenger of Allah say the Talbiyah: "Labbaika Allahumma Labbaik, Labbaika La sharika laka Labbaik. Innal-hamda wan-ni'mata laka wal-mulk, la sharika lak (Here I am, O Allah, here I am. Here I am, You have no partner, here I am. Verily all praise and blessings are Yours, and all sovereignty, You have no partner)." 'Abdullah bin 'Umar used to say: "The Messenger of Allah used to pray two Rak'ahs in Dhul-Hulaifah, then when his she-camel stood up straight with him at the Masjid of Dhul-Hulaifah, he would enter Ihram saying these words."

"We were talking about something, and I had only recently left Jahiliyyah behind, so I swore by Al-Lat and Al-'Uzza. The Companions of the Messenger of Allah said to me: 'What a bad thing you have said! Go to the Messenger of Allah and tell him, for we think that you have committed Kufr.' So I went to him and told him, and he said to me: 'Say: La ilaha illallah wahdahu la sharika lah (There is none worthy of worship except Allah alone, without partner) three times, and seek refuge with Allah from the Shaitan three times, and spit dryly to your left three times, and do not say that again.'"

"When the Messenger of Allah (S.A.W) left Hunain, I was the tenth of a group of ten of the people of Makkah who were trying to catch up with them. We heard them calling the Adhan for the prayer and we started to repeat the Adhan, mocking them. The Messenger of Allah (S.A.W) said, 'I heard among these people the Adhan of one who has a beautiful voice.' He sent for us, and we recited the Adhan one by one, and I was the last of them. When I said the Adhan, he said: 'Come here.' He sat me down in front of him and rubbed my forelock and blessed me three times, then he said, 'Go and give the Adhan at the sacred House.' I said: 'How, O Messenger of Allah?' He taught me as you say the Adhan now: 'Allahu Akbar, Allahu akbar, Allahu Akbar, Allahu Akbar; Ashhadu an la ilaha illallah, Ashhadu an la ilaha illallah; Ashhadu anna Muhammadan Rasulallah, Ashhadu anna Muhammadan Rasulallah, Ashhadu an la ilaha illallah, Ashhadu an la ilaha illallah; Ashhadu anna Muhammadan Rasulallah, Ashhadu anna Muhammadan Rasulallah; Hayya 'alas-salah, Hayya 'ala-salah; Hayya 'alal-falah Hayya 'alal-falah; as-salatu khairun min an-nawm;as-salatu khairun min an-nawm; (Allah is the Greatest, Allah is the Greatest, Allah is the Greatest, Allah is the Greatest; I bear witness that there is none worthy of worship except Allah, I bear witness that there is none worthy of worship except Allah; I bear witness that Muhammad is the Messenger Allah, I bear witness that Muhammad is the Messenger Allah; I bear witness that there is none worthy of worship except Allah, I bear witness that there is none worthy of worship except Allah; I bear witness that Muhammad is the Messenger of Allah, I bear witness that Muhammad is the Messenger of Allah; Come to prayer, come to prayer; come to prosperity, come to prosperity; prayer is better than sleep, prayer is better than sleep)' - in the first (Adhan) for As-Subh (Fajr). And he taught me the Iqamah saying each phrase twice: 'Allahu Akbar, Allahu Akbar, (Allahu Akbar, Allahu Akbar), Ashhadu an la ilaha illallah, Ashhadu an la ilaha illallah; Ashhadu anna Muhammadan Rasulallah, Ashhadu anna Muhammadan Rasulallah; Hayya 'alas-salah, Hayya 'alas-salah; Hayya 'alal-falah, Hayya 'alal-falah; qad qamatis-salah, qad qamati-salah, Allahu Akbar, Allahu Akbar La ilaha illallah (Allah is the Greatest, Allah is the Greatest, (Allah is the Greatest, Allah is the Greatest); I bear witness that there is none worthy of worship except Allah, I bear witness that there is none worthy of worship except Allah ; I bear witness that Muhammad is the Messenger of Allah, I bear witness that Muhammad is the Messenger of Allah; Come to prayer, come to prayer; come to prosperity, come to prosperity; the prayer is about to begin, the prayer is about to begin, Allah is the Greatest, Allah is the Greatest; there is none worthy of worship except Allah)." (One of the narrators) Ibn Juraij said: ''Uthman narrated this whole report to me from his father and from Umm 'Abdul-Malik bin Abi Mahdhurah, and (said that) they heard that from Abu Mahdhurah.

The Messenger of Allah [SAW] said: "I have been commanded to fight the people until they say La ilaha illallah, and whoever says it, his life and his wealth are safe from me, except for a right that is due, and his reckoning will be with Allah."

“The Messenger of Allah (SAW) said: ‘Urge your dying ones to say: “La ilaha illallah.”

Messenger of Allah (PBUH) dispatched a contingent of the Muslims to a tribe of the polytheists. The two sides met (in combat) at one place. A man among the polytheists was so dashing that, whenever he intended to kill a man from Muslims, he killed him. Amongst the Muslims, too, was a man looking forward to (an opportunity of) his (polytheist's) unmindfulness. He (the narrator) said: We talked that he was Usamah bin Zaid (May Allah be pleased with him). When he raised his sword, he (the soldier of the polytheists) uttered: "La ilaha illallah (There is no true god except Allah)." But he (Usamah bin Zaid) killed him. When the good news of victory reached Messenger of Allah (PBUH) he asked him (about the events of the battle), and he informed him about the man (Usamah) and what he had done. He (Messenger of Allah (PBUH)) sent for him and asked him why he had killed him. He (Usamah) said, "O Messenger of Allah, he struck the Muslims and killed such and such of them." And he named some of them. (He continued): "I attacked him and when he saw the sword he said: 'La ilaha illallah."' Messenger of Allah (PBUH) said, "Did you kill him?" He (Usamah) replied in the affirmative. The Messenger of Allah then remarked, "What would you do with regard to (the utterance): La ilaha illallah, when it comes (before you) on the Day of Resurrection?" He (Usamah) said, "O Messenger of Allah! Beg forgiveness for me". He (the Prophet (PBUH)) said, "What would you do with regard to (the utterance): La ilaha illallah, when it comes (before you) on the Day of Resurrection?" He (Messenger of Allah (PBUH)) added nothing to it but kept repeating, "What would you do with regard to (the utterance): La ilaha illallah, when it comes (before you) on the Day of Resurrection?".

[Muslim].

Bismillāhi, tawakkaltu `alallāhi, wa lā ḥawla wa lā quwwata illā billāh. In the Name of Allah, I have placed my trust in Allah, there is no might and no power except by Allah. Reference: Abu Dawud 4/325, At-Tirmidhi 5/490. See also Al-Albani, Sahih At-Tirmidhi 3/151

"The Messenger of Allah [SAW] said: 'Faith has seventy-odd branches, the most virtuous of which is La ilaha illallah (there is none worthy of worship except Allah) and the least of which is removing something harmful from the road. And modesty (Al-Haya') is a branch of faith.'"

"The Messenger of Allah performed ablution washing each part once. He said: 'This is the ablution of the person from whom Allah will not accept his prayer without it.' Then he performed ablution washing each part twice, and he said: 'This is the ablution that Allah appreciates.' Then he performed ablution washing each part three times, and said: 'This is how ablution is performed properly, and this is my ablution and the ablution of the Close Friend of Allah, Ibrahim. Whoever performs ablution like this, then on completing it says: 'Ashhadu an la ilaha illallah, wa ashhadu anna Muhammadan 'abduhu wa rasuluhu' (I bear witness that none has the right to be worshipped but Allah, and I bear witness that Muhammed is His servant and His Messenger), eight gates of Paradise will be opened to him and he may enter through whichever one he wants.'"

"The Messenger of Allah said: 'Whoever among you swears and says: By Al-Lat, let him say: La ilaha illallah (There is none worthy of worship except Allah). And whoever says to his companion: Come, let us gamble, then let him give in charity.'"

The Messenger of Allah (PBUH) said, "Exhort your dying men to recite: 'La ilaha illallah' (There is no true god except Allah)."

[Muslim].

I heard the Messenger of Allah (PBUH) saying, "The best way to celebrate the remembrance of Allah is to say: La ilaha illallah (there is no true god except Allah)."

[At-Tirmidhi].

that the Messenger of Allah (SAW) said: "Faith has seventy-some odd doors, the lowest of which is removing something harmful from the road, and its highest is the statement 'La Ilaha Illallah.'"

"The Messenger of Allah(SAW) said: (About saying) La ilaha illah - no deed takes precedence over it and it does not leave any sin.'"

"I have been commanded to fight the people until they say La ilaha illallah (there is non worthy or worship except Allah). Whoever says it, his life and his property are safe from me, except for its right, and his reckoning will be with Allah."

Messenger of Allah (PBUH) sent us to Huraqat, a tribe of Juhainah. We attacked that tribe early in the morning and defeated them, (then) a man from the Ansar and I caught hold of a man (of the defeated tribe). When we overcame him, he said: 'La ilaha illallah (There is no true god except Allah).' At that moment, the Ansari spared him, but I attacked him with my spear and killed him. By the time we went back to Al-Madinah, news had already reached Messenger of Allah (PBUH). He said to me, "O Usamah, did you kill him after he professed La ilaha illallah (There is no true god except Allah)?" I said, "O Messenger of Allah! He professed it only to save his life." Messenger of Allah (PBUH) repeated, "Did you kill him after he had professed La ilaha illallah?" He went on repeating this to me until I wished I had not embraced Islam before that day (so that I would have not committed this sin).

[Al-Bukhari and Muslim].

Another narration is: Messenger of Allah (PBUH) said, "Did you kill him in spite of his professing La ilaha illallah?" I said, "O Messenger of Allah! He said out of fear of our arms." He (PBUH) said, "Why did you not cut his heart open to find out whether he had done so sincerely or not?" He continued repeating it until I wished that I had embraced Islam only that day.

"When the Messenger of Allah [SAW] died, and Abu Bakr (became Khalifah) after him, and the 'Arabs reverted to Kufr, 'Umar said: 'O Abu Bakr, how can you fight the people when the Messenger of Allah [SAW] said: I have been commanded to fight the people until they say La ilaha illallah, and whoever says La ilaha illallah, his wealth and his life are safe from me, except for a right that is due, and his reckoning will be with Allah, the Mighty and Sublime?' Abu Bakr said: 'I will fight whoever separates Salah and Zakah, for Zakah is the compulsory right to be taken from wealth. By Allah, if they withhold from me a young goat that they used to give to the Messenger of Allah [SAW], I will fight them for withholding it.' 'Umar said: 'By Allah, as soon as I saw that Allah has expanded the chest of Abu Bakr to fighting, I knew that it was the truth.'"

The Messenger of Allah (PBUH) said, "He whose last words are: `La ilaha illallah' (There is no true god except Allah) will enter Jannah.''

[Abu Dawud].

that the Messenger of Allah (SAW) said: "Islam is based upon five: the testimony of La Ilaha Illallah, and that Muhammad is the Messenger of Allah, the establishment of the Salat, giving the Zakat, fasting (the month of) Ramadan, and performing Hajj to the House."

that regarding Allah's saying: We shall certainly call all of them to account. For all that they used to do (15:92 & 93). The Prophet (SAW) said: "About saying La Ilaha Illallah."

from his father, from the Prophet (SAW) (regarding this Ayah): 'And made them stick to the word of Taqwa (48:26).' He (SAW) said (the word is): "La Ilaha Illallah."

Allāhumma aslamtu nafsī ilayk, wa fawwaḍtu amrī ilayk, wa wajjahtu wajhī ilayk, wa alja'tu ẓahrī ilayk, raghbatan wa rahbatan ilayk, lā malja'a wa la manjā minka illā ilayk, āmantu bikitābika ‘l-ladhī anzalt, wa bi-nabiyyika ‘l-ladhī arsalt. O Allah,1 I submit myself to You, entrust my affairs to You, turn my face to You, and lay myself down depending upon You, hoping in You and fearing You. There is no refuge, and no escape, except to You. I believe in Your Book (the Qur'an) that You revealed, and the Prophet whom You sent. Reference: 1 "Before you go to bed perform ablutions as you would for prayer, then lie down on your right side and say. . . " The Prophet (SAW) said: "Whoever says this and dies in his sleep, has died in a state of the natural monotheism (Fitrah)." Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 11/113, Muslim 4/2081.

the Messenger of Allah (SAW) said: "Whoever takes an oath, and swears, saying: 'By Al-Lat and Al-Uzza,' let him say:'La ilaha illallah.' "

A man said to him: "The Messenger of Allah [SAW] came to us while we were in a tent inside the Masjid of Al-Al-Madinah, and he said to us: 'It has been revealed to me that I should fight the people until they say La ilaha illallah.'" A similar narration.