The Messenger of Allah (PBUH) said, "Surat Ikhlas is equivalent to one-third of the Qur'an."

[Muslim].

The Prophet (SAW) recited Surat al-Kafirun, and Surat al-Ikhlas in the two (voluntary) Rak'at of the Fajr (prayer). [Reported by Muslim].

During the two Rak'ah of Tawaf, the Messenger of Allah recited the two Surat of Ikhlas, "Say: O you disbelievers!" and: "Say: He is Allah, (the) One."

“The Prophet (saw) used to recite in the Maghrib: ‘Say: O you disbelievers!’[Al-Kafirun (109)] and ‘Say: He is Allah, (the) One.’”[Al-Ikhlas (112)]

The Messenger of Allah (PBUH) said, "By Him in Whose Hand my soul is, it is equivalent to one-third of the Qur'an."

According to another version, he (PBUH) said to his Companions, "Is anyone of you incapable of reciting one-third of the Qur'an in one night?" They considered it burdensome and said: "O Messenger of Allah, which of us can afford to do that?" He (PBUH) said, "Surat Al-Ikhlas [Say: He is Allah (the) One] is equivalent to one-third of the Qur'an."

[Al- Bukhari].

“Say: ‘O you disbelievers!” [Al-Kafirun (109)] and “Say: Allah is One.” [Al-Ikhlas (112)]

“Say: O you disbelievers!” [Al-Kafirun (109)] and “Say: He is Allah the One.” [Al- Ikhlas (112)]

The Prophet (saws) would recite in the two (supererogatory) rak'ahs of the dawn prayer: "Say, O unbelievers" [Surat al-Kafiroon:1] and "Say: He is Allah, the one" [Surat al-Ikhlas:1]

“I watched the Prophet (saw) for a month, and in the two Rak’ah before Fajr he used to recite: “Say: O you disbelievers!” [Al-Kafirun (109)] and “Say: Allah is One.” [Al- Ikhlas (112)]

The Messenger of Allah (PBUH) recited in the two supererogatory Rak'ah of the Fajr prayer Surat Al-Kafirun (No. 109) [in the first Rak'ah], and Surat Al-Ikhlas (No. 112) [in the second Rak'ah].

[Muslim].

A man said: "O Messenger of Allah! I love Surat-Al-Ikhlas [Say: He is Allah, (the) One]." He (PBUH) said, "Your love for it will admit you to Jannah."

[At-Tirmidhi].

Abu Dawud and at-Tirmidhi report something similar from 'Aishah (RA) that Allah's Messenger (SAW) used to recite a Surat in every Rak'at and in the last (third) Rak'at he would recite Qul Huwa Allahu Ahad (Surat al-Ikhlas) and al-Mu'awwidhatain.

I observed the Prophet (PBUH) for one month reciting in the two supererogatory Rak'ah of the Fajr prayer Surat Al-Kafirun (No. 109) [in the first Rak'ah], and Surat Al-Ikhlas (No. 112) [in the second Rak'ah].

[At-Tirmidhi].

“The Messenger of Allah (saw) used to perform Witr and recite: ‘Glorify the Name of your Lord the Most High.’, [Al-A’la (87)] ‘Say: O you disbelievers!” [Al-Kafirun (109)] and ‘Say: Allah is One.”. [Al-Ikhlas (112)]

“The Messenger of Allah (saw) used to perform two Rak’ah before Fajr, and he used to say: ‘The best two Surah to recite in the two Rak’ah of Fajr are: “Say: Allah is One” [Al-Ikhlas (112)] and “Say: O you disbelievers.” [Al-Kafirun (109)]

The Messenger of Allah (PBUH) said to me, "Recite Surat Al-Ikhlas and Al- Mu'awwidhatain (Surat Al-Falaq and Surat An-Nas) three times at dawn and dusk. It will suffice you in all respects."

[Abu Dawud and At-Tirmidhi].

“Glorify the Name of your Lord the Most High,” [Al-A’la (87)] “Say: O you disbelievers!” [Al-Kafirun (109)] and ‘Say: Allah is One.”. [Al-Ikhlas (112)] Another chain with similar wording.

Ibn Abbas used to pray witr with three (units) with (the Surahs): "Glorify the Name of Your Lord, the Most High" (Surah Al-A'la), "Say: O You disbelievers" (Surah Al-Kafirun), and "Say: He is Allah, (the) One" (Surah Al-Ikhlas).

Allah's Messenger (SAW) recited in Witr prayer Surat al-A'la (in the first Rak'at), Surat al-Kafirun (in the second Rak'at) and Surat al-Ikhlas (in the third Rak'at). [Reported by Ahmad, Abu Dawud and an-Nasa'i]. The latter added, "And he did not say the Taslim (salutation) except in the last (Rak'at) of them."

A man heard another reciting Surat Al-Ikhlas repeatedly. The next morning he came to the Messenger of Allah (PBUH) and informed him about it as if he considered it to be of little reward. On that the Messenger of Allah (PBUH) said, "By Him in Whose Hand my soul is, this Surah is equal to one-third of the Qur'an."

[Al- Bukhari].

I heard the Messenger of Allah (ﷺ) say: `I know a word which no one says, sincerely from the heart, but he will be forbidden to the Fire.” `Umar bin al-Khattab (رضي الله عنه) said to him: I will tell you what it is: it is the word of al-ikhlas by means of which Allah, may He be blessed and exalted, caused Muhammad (ﷺ) and his companions to prevail and it is the word of taqwa that the Prophet (ﷺ) of Allah urged his uncle Abu Talib to say when he was dying, the testimony that there is no god but Allah.

Get together. for I am going to recite one-third of the Qur'an before you. And those who could get together gathered there. Then the Apostle of Allah (may peace be upon him) came out and recited:" Say: He, Allah, is One." He then entered (his house). Some of us said to the others: Perhaps there has been some news from the heaven on account of which he has gone Inside (the house). The Apostle of Allah (may peace be upon him) again came out and said: I told you that I was going to recite one-third of the Qur'in; keep in mind, this (Surah Ikhlas) is equivalent to one-third of the Qur'an.

Messenger of Allah, (PBUH) appointed a man in charge of an army unit who led them in Salat (prayer); he always concluded his recitation with Surat Al-Ikhlas: "Say (O Muhammad (PBUH)): 'He is Allah, (the) One. Allah-us-Samad (Allah - the Self-Sufficient). He begets not, nor was He begotten. And there is none equal or comparable to Him."' (112:1-4) Upon their return to Al-Madinah, they mentioned this to Messenger of Allah (PBUH), who said, "Ask him why he does so?" He was asked and he said, "This Surah contains the Attributes of Allah, the Gracious, and I love to recite it. Messenger of Allah (PBUH) then told them, "Tell him that Allah loves him".

[Al-Bukhari and Muslim].

The Messenger of Allah (ﷺ) used to pray Witr reciting nine surahs from Al-Mufassal. Aswad said: In the first rak’ah he would recite `The mutual rivalry (for piling up of worldly things) diverts you` [At-Takathur 102] and “verily, We have sent it (this Qur`an) down in the Night of Al-Qadr (Decree)` [al-Qadr 97], and `When the earth is shaken with its (final) earthquake` [az-Zalzalah 99]. In the second rak`ah he would recite `By Al-‘Asr (the time)” [Al-ʻAsr 103] and `When there comes the Help of Allah (to you, O Muhammad against your enemies) and the Conquest (of Makkah)` [An-Nasr 95] and “Verily. We have granted you (O Muhammad (ﷺ)) Al-Kawthar (a river in Paradise)` [Al-Kawthar 108]. In the third rak`ah he would recite “Say (O Muhammad to these Mushrikoon and Kafiroon): `O Al-Kafiroon (disbelievers in Allah, in His Oneness, in His Angels, in His Books, in His Messengers, in the Day of Resurrection, and in Al Qadar)!” [Al-Kafiroon 109] and “Perish the two hands of Abu Lahab (an uncle of the Prophet (ﷺ)) and perish he!` [Al-Masad 109] and `Say (O Muhammad (ﷺ)): “He is Allah, (the) One“ [Al-Ikhlas 112].

He is Allah (the) One. The Self-Sufficient Master, Whom all creatures need, He begets not nor was He begotten, and there is none equal to Him. With the Name of Allah, the Most Gracious, the Most Merciful. Say: I seek refuge with (Allah) the Lord of the daybreak, from the evil of what He has created, and from the evil of the darkening (night) as it comes with its darkness, and from the evil of those who practice witchcraft when they blow in the knots, and from the evil of the envier when he envies. With the Name of Allah, the Most Gracious, the Most Merciful. Say: I seek refuge with (Allah) the Lord of mankind, the King of mankind, the God of mankind, from the evil of the whisperer who withdraws, who whispers in the breasts of mankind, of jinns and men. Reference: Al-Ikhlas 112:1-4, Al-Falaq 113:1-5, An-Nas 114:1-6. Whoever recites these three times in the morning and in the evening, they will suffice him (as a protection) against everything. The Hadith was reported by Abu Dawud 4/322, and At-Tirmidhi 5/567. See Al-Albani's Sahih At-Tirmidhi 3/182.

He is Allah (the) One. The Self-Sufficient Master, Whom all creatures need, He begets not nor was He begotten, and there is none equal to Him. With the Name of Allah, the Most Gracious, the Most Merciful. Say: I seek refuge with (Allah) the Lord of the daybreak, from the evil of what He has created, and from the evil of the darkening (night) as it comes with its darkness, and from the evil of those who practice witchcraft when they blow in the knots, and from the evil of the envier when he envies. With the Name of Allah, the Most Gracious, the Most Merciful. Say: I seek refuge with (Allah) the Lord of mankind, the King of mankind, the God of mankind, from the evil of the whisperer who withdraws, who whispers in the breasts of mankind, of jinns and men. Reference: Abu Dawud 2/86, An-Nasa'i 3/68. See also Al-Albani, Sahih At-Tirmidhi 2/8.

Bismillāhir-Raḥmānir-Raḥīm. Qul huwallāhu aḥad. Allāhuṣ-ṣamad. Lam yalid wa lam yūlad. Wa lam yakun lahu kufuwan aḥad. Reference: Al-Ikhlas 112:1-4. Bismillāhir-Raḥmānir-Raḥīm. Qul a`ūdhu birabbil-falaq. Min sharri mā khalaq. Wa min sharri ghāsiqin idhā waqab. Wa min sharrin-naffāthāti fil-`uqad. Wa min sharri ḥāsidin idhā ḥasad. Reference: Al-Falaq 113:1-5. Bismillāhir-Raḥmānir-Raḥīm. Qul a`ūdhu birabbin-nās. Malikin-nās. 'Ilāhin-nās. Min sharri ‘l-waswāsil-khannās. Alladhī yuwaswisu fī ṣudūrin-nās. Minal-jinnati wannās. Reference: An-Nas 114:1-6 Hold the palms together, blow (with a little spittle) into them, and recite: "With the Name of Allah, the Most Gracious, the Most Merciful. Say: He is Allah (the) One. The Self-Sufficient Master, Whom all creatures need, He begets not nor was He begotten, and there is none equal to Him. With the Name of Allah, the Most Gracious, the Most Merciful. Say: I seek refuge with (Allah) the Lord of the daybreak, from the evil of what He has created, and from the evil of the darkening (night) as it comes with its darkness, and from the evil of those who practice witchcraft when they blow in the knots, and from the evil of the envier when he envies. With the Name of Allah, the Most Gracious, the Most Merciful. Say: I seek refuge with (Allah) the Lord of mankind, the King of mankind, the God of mankind, from the evil of the whisperer who withdraws, who whispers in the breasts of mankind, of jinns and men." (Then pass your hands over as much of your body as you can reach, beginning with the head and the face, then the entire front of your body. Do this three times.) Reference: Al-Bukhari, cf. Al-Asqalani, Fathul-Bari 9/62, and Muslim 4/ 1723.

“We entered upon Jabir bin ‘Abdullah, and when we reached him he asked about the people (i.e., what their names were, etc.). When he reached me, I said: ‘I am Muhammad bin ‘Ali bin Husain.’ He stretched forth his hand towards my head, and undid my top button, then undid my lower button. Then he placed his hand on my chest, and I was a young boy at that time. Then he said: ‘Welcome to you, ask whatever you want.’ So I asked him, and he was blind. The time for prayer came, so he stood up, wrapping himself in a woven cloth. Every time he put it on his shoulders, its edges came up, because it was too small. And his cloak was beside him on a hook. He led us in prayer, then he said: ‘Tell us about the Hajj of the Messenger of Allah (saw).’ He held up his hands, showing nine (fingers), and said: ‘The Messenger of Allah (saw) stayed for nine years without performing Hajj, then it was announced to the people in the tenth year that the Messenger of Allah (saw) was going for Hajj. So many people came to Al-Madinah, all of them seeking to follow the Messenger of Allah (saw) and do what he did. He set out and we set out with him, and we came to Dhul-Hulaifah where Asma’ bint ‘Umais gave birth to Muhammad bin Abu Bakr. She sent word to the Messenger of Allah (saw) asking what she should do. He said: “Perform Ghusl, fasten a cloth around your waist and enter Ihram.” The Messenger of Allah (saw) prayed in the mosque, then he rode Qaswa’ (his she-camel) until, when his she-camel arose with him upon Baida’,’ Jabir said: ‘As far as I could see, I saw people riding and walking in front of him, and I saw the same to his right and left, and behind him, and the Messenger of Allah (saw) was among us and Qur’an was being revealed to him, and he understood its meaning. Whatever he did, we did too. Then he began the Talbiyah of monotheism: “Labbaika Allahumma labbaik, labbaika la sharika laka labbaik. Innal-hamda 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).” And the people repeated his words. And the Messenger of Allah (saw) approved of that. And the Messenger of Allah (saw) continued to recite the Talbiyah.’ Jabir said: ‘We did not intend (to do) anything but Hajj. We were not aware of ‘Umrah. Then when we reached the House with him, he touched the Corner, and walked quickly (Ramal) for three circuits and walked (normally) for four. Then he stood at the place of Ibrahim and said: “And take you (people) the place of Ibrahim as a place of prayer.” [2:125] He stood with the place between him and the House. My father used to say:* “And I do not think that he mentioned it other than from the Prophet (saw): ‘That he used to recite in those two Rak’ah (at the place of Ibrahim): “Say: ‘O you disbelievers!’” [Al-Kafirun (109)] and “Say: ‘He is Allah, (the) One.’” [Al-Ikhlas (112)] “Then he went back to the House and touched the Corner, then he went out through the gate to Safa. When he drew near to Safa he recited: “Verily, Safa and Marwah are among the symbols of Allah,” [2:158] (and said:) “We will start with that with which Allah started.” So he started with Safa and climbed it until he could see the House, then proclaimed the greatness of Allah (by saying: Allahu Akbar) and said Tahlil (La ilaha illallah) and praised Him (saying Al-Hamdulillah), and he said: “La ilaha illallah wahdahu la sharika lahu, lahul-mulku, wa lahul-hamdu, yuhyi wa yumit wa huwa ‘ala kulli shai’in Qadir. La ilaha illallah wahdahu, La sharika lahu anjaza wa’dahu, wa nasara ‘abduhu, wa hazamal-Ahzaba wahdahu (None has the right to be worshiped but Allah alone, with no partner or associate; His is the dominion, all praise is due to Him, He gives life and causes death and He is able to do all things. None has the right to be worshiped but Allah alone; He has no partner or associate, He fulfilled His promise, granted victory to His slave, and defeated the Confederates alone).” And he said that three times, supplication in between. Then he headed towards Marwah walking normally until, when he started to go downhill, he walked quickly (Ramal) in the bottom of the valley. When he started to go uphill, he walked normally, until he reached Marwah, and he did atop Marwah what he had done atop Safa. At the end of his Sa’y, atop Marwah he said: “If I had known before what I have come to know now, I would not have garlanded the sacrificial animal, and I would have made it ‘Umrah. Whoever among you does not have a sacrificial animal with him, let him exit Ihram and make it ‘Umrah.” So all the people exited Ihram and cut their hair, except the Prophet (saw) and those who had sacrificial animals with them. Suraqah bin Malik bin Ju’shum stood up and said: “O Messenger of Allah! Is this for this year only, or forever and ever?” The Messenger of Allah (saw) interlaced his fingers and said: “‘Umrah is included in Hajj like this,” twice. “No, it is forever and ever.” ‘Ali brought the camels of the Prophet (saw), and he found that Fatimah was one of those who had exited Ihram. She had put on a dyed garment and used kohl. ‘Ali disliked this action on her part, but she said: “My father told me to do this.” ‘Ali used to say in Iraq: “So I went to the Messenger of Allah (saw), feeling upset with Fatimah because of what she had done, to ask the Messenger of Allah (saw) about what she had said that he said, and that I had disliked that. He said: ‘She spoke the truth, she spoke the truth. What did you say when you began your Hajj?’” He said: “I said: ‘O Allah, I begin the Talbiyah for that for which your Messenger (saw) begins the Talbiyah.’ (He said:) ‘And I have the sacrificial animal with me, so do not exit Ihram.’ He said: “The total number of sacrificial animals that ‘Ali had brought from Yemen and that the Prophet (saw) brought from Al-Madinah were one hundred. Then all the people exited Ihram and cut their hair, apart from the Prophet (saw) and those who had sacrificial animals with them. When the day of Tarwiyah came (the 8th of Dhul-Hijjah), they headed for Mina and began the Talbiyah for Hajj. The Messenger of Allah (saw) rode. He prayed Zuhr, ‘Asr, Maghrib, ‘Isha’ and Fajr at Mina. Then he stayed for a short while until the sun rose, and he ordered that a tent of goat hair be pitched for him in Namirah. Then the Messenger of Allah (saw) set out, and the Quraish were certain that he was going to stay at Al-Mash’ar Haram or at Al-Muzdalifah, as Quraish used to do during the Ignorance days. But the Messenger of Allah (saw) continued until he came to ‘Arafat, where he found that the tent had been pitched for him in Namirah, and he stopped there. Then when the sun had passed its zenith, he called for Qaswa’ and she was saddled for him. He rode until he came to the bottom of the valley, and he addressed the people and said: ‘Your blood and your wealth are sacred to you, as sacred as this day of yours, in this month of yours, in this land of yours. Every matter of Ignorance days is abolished, beneath these two feet of mine. The blood feuds of the Ignorance days are abolished, and the first blood feud of Rabi’ah bin Harith, who was nursed among Banu Sa’d and killed by Hudhail. The usuries of Ignorance days are abolished, and the first usury (that I abolish) is our usury, the usury due to ‘Abbas bin ‘Abdul-Muttalib. It is all abolished. Fear Allah with regard to women, for you have taken them as a trust from Allah, and intimacy with them has become permissible to you through Allah’s Word. Your rights over them are that they should not allow anyone whom you dislike to sit on your bedding.** If they do that, then hit them, but in a manner that does not cause injury or leave a mark. Their rights over you are that you should provide for them and clothe them in a reasonable manner. I have left behind you something which, if you adhere to it, you will never go astray: the Book of Allah. You will be asked about me. What will you say?’ They said: ‘We bear witness that you have conveyed (the message) and fulfilled (your duty) and offered sincere advice.’ He gestured with his forefinger towards the sky and then towards the people, (and said:) ‘O Allah, bear witness, O Allah bear witness,’ three times. Then Bilal called the Adhan, then the Iqamah, and he prayed Zuhr. Then he made Iqamah and prayed ‘Asr, and he did not offer any prayer between them. Then the Messenger of Allah (saw) rode until he came to the place of standing, and he made his she-camel face Sakharat*** with the path in the sand in front of him, and he faced the Qiblah, then he remained standing until the sun had set and the afterglow had lessened somewhat, when the disk of the sun disappeared. Then he seated Usamah bin Zaid behind him and the Messenger of Allah (saw) set out. He pulled Qaswa’s reins tight until her head was touching the saddle, and he gestured with his right hand: ‘O people, calmly, calmly!’ Every time he came to a hill, he released the reins a little so that she could climb. Then he came to Muzdalifah where he prayed Maghrib and ‘Isha’ with one Adhan and two Iqamah, offering no prayer in between. Then the Messenger of Allah (saw) lay down until dawn came, and he prayed Fajr, when he saw that morning had come, with one Adhan and one Iqamah. Then he rode Qaswa’ until he came to Al-Mash’ar Al-Haram. He climbed it and praised Allah and proclaimed His greatness and that He is the only One worthy of worship. Then he remained standing until it had become quite bright, then he moved on before the sun rose. He seated Fadl bin ‘Abbas behind him, who was a man with lovely hair, white and handsome. When the Messenger of Allah (saw) moved on, he passed some women riding camels. Fadl started to look at them, so the Messenger of Allah (saw) put his hand on the other side. Fadl turned his face to the other side to look. When he came to Muhassir, he sped up a little. Then he followed the middle road that brings you out to the biggest Pillar, until he reached the Pillar that is by the tree. He threw seven pebbles, saying the Takbir with each throw, pebbles suitable for Khadhf (i.e., the size of a chickpea) throwing from the bottom of the valley. Then he went to the place of slaughter, and slaughtered sixty-three camels with his own hand. Then he handed it over to ‘Ali who slaughtered the rest, and he gave him a share in his sacrificial animal. Then he ordered that a piece from each camel be brought; (the pieces) were put in a pot and cooked, and they (the Prophet (saw) and ‘Ali) ate from the meat and drank from the soup. Then the Messenger of Allah (saw) hastened to the House, and prayed Zuhr in Makkah. He came to Banu ‘Abdul-Muttalib, who were providing water to the pilgrims at Zamzam, and said: ‘Draw me some water, O Banu ‘Abdul-Muttalib. Were it not that the people would overwhelm you, I would have drawn water with you.’ So they drew up a bucket for him and he drank from it.’”

* It appears that the speaker is Ja’far bin Muhammad who is narrating from his father, from Jabir.
**And they say that the meaning if ‘your furniture’ or, ‘your special place’ in which case the objective is to say that the wife is not to admit anyone in the house whom the husband would be displeased with.
***Sakharat plural of Sakhrah rock or boulder. Nawawi said: “They are the rocks that lay at the base of the Mount of Mercy, and it is the mount in the middle of ‘Arafat.”