“I asked Aishah [may Allah be pleased with her]: ‘With what did the Prophet used to open his Salat when he stood up in the night?’ She said: ‘When he stood up in the night, he would open his Salat by saying: “O Allah, Lord of Jibra’il, Mika’il, and Israfil; Originator of the heavens and the earth, [and] Knower of the hidden and the seen; You judge between Your slaves concerning that which they used to differ, guide me through that which there has been difference concerning the truth, verily, You are upon a straight path (Allāhumma rabba Jibrīla wa Mīkā'ila wa Isrāfīl, fāṭira-samāwāti wal-arḍi [wa] `ālimal-ghaibi wash-shahādati anta taḥkumu baina `ibādika fīmā kānū fīhi yakhtalifūn, ihdini limakhtulifa fīhi minal-ḥaqqi bi'idhnika innaka tahdī man tashā'u ilā ṣirātin mustaqīm).”

The Messenger of Allah ﷺ stood before us as I am standing before you, and said: `I urge you to show respect to my Companions, then those who come after them, then those who come after them, then lying will become so widespread that a man will start to give testimony before he is asked to do so.Whoever among you wants to attain a spacious abode in Paradise, let him adhere to the jama'ah (main body of Muslims), for the Shaitan is with the one who is alone, but he is further away from two. And no one of you should be alone with a woman for the Shaitan will be the third one present. The one who is pleased with his good deeds and upset by his bad deeds is a believer.`

Umar addressed the people in al­-Jabiyah, and said: The Messenger of Allah ﷺ stood as I am standing and said: `Treat my Companions kindly, then those who come after them, then those who come after them. Then there will come people who will swear oaths before being asked to swear and will give testimony before being asked to give testimony. Whoever among you would like to attain the best place in Paradise, let him adhere to the jama'ah (the main body of Muslims), for the Shaitan is with one and he is further away from two. No man should be alone with a woman because the Shaitan will be the third one present. Whoever feels pleased when he does a good deed and feels bad when he does an evil deed is a believer.”

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.

We went to Amr b. al-As and he was about to die. He wept for a long time and turned his face towards the wall. His son said: Did the Messenger of Allah (may peace be upon him not give you tidings of this? Did the Messenger of Allah (may peace be upon him) not give you tidings of this? He (the narrator) said: He turned his face (towards the audience) and said: The best thing which we can count upon is the testimony that there is no god but Allah and that Muhammad is the Apostle of Allah. Verily I have passed through three phases. (The first one) in which I found myself averse to none else more than I was averse to the Messenger of Allah (may peace be upon him) and there was no other desire stronger in me than the one that I should overpower him and kill him. Had I died in this state, I would have been definitely one of the denizens of Fire. When Allah instilled the love of Islam in my heart, I came to the Apostle (may peace be upon him) and said: Stretch out your right hand so that may pledge my allegiance to you. He stretched out his right hand, I withdrew my hand, He (the Holy Prophet) said: What has happened to you, O 'Amr? replied: I intend to lay down some condition. He asked: What condition do you intend to put forward? I said: should be granted pardon. He (the Holy Prophet) observed: Are you not aware of the fact that Islam wipes out all the previous (misdeeds)? Verily migration wipes out all the previous (misdeeds), and verily the pilgrimage wipes out all the (previous) misdeeds. And then no one as or dear to me than the Messenger of Allah and none was more sublime in my eyes than he, Never could I, pluck courage to catch a full glimpse of his face due to its splendour. So if I am asked to describe his features, I cannot do that for I have not eyed him fully. Had I died in this state had every reason to hope that I would have bee among the dwellers of Paradise. Then we were responsible for certain things (in the light of which) I am unable to know what is in store for me. When I die, let neither female mourner nor fire accompany me. When you bury me, fill my grave well with earth, then stand around it for the time within which a camel is slaughtered and its meat is distributed so that I may enjoy your intimacy and (in your company) ascertain what answer I can give to the messengers (angels) of Allah.

The Prophet (SAW) considered Shahadah az-Zur (giving false testimony) among the most serious of major sins. [al-Bukhari and Muslim reported it in a long Hadith].