al-Zuhri ابن شهاب الزهري‎, محمد بن مسلم · Fasting (Kitab Al-Siyam)

A man said to Messenger of Allah (ﷺ): Messenger of Allah, I was overtaken by dawn while I was sexually defiled, and I want to keep fast. The Messenger of Allah (ﷺ) said: I am also overtaken by dawn while I am in the state of sexual defilement ; I also want to keep fast. I take a bath and I keep fast. The man said: Messenger of Allah, you are not like us ; Allah has forgiven you your…

A man came to the Prophet (ﷺ) and said: I am undone. He asked him: What has happened to you ? He said: I had intercourse with my wife in Ramadan (while I was fasting). He asked: Can you set a slave free ? He said: No. He again asked: Can you fast for two consecutive months ? He said: No. He asked: Can you provide food for sixty poor people ? He said: No. He said: Sit down. Then…

This was a special concession for him. If a man commits this act today, the expiation is necessary for him. Abu Dawud said: Al-Laith b. Sa'd, al-Awza'i, Mansur b. al-Mu'tamir and 'Irak b. Malik have narrated this tradition like the one narrated by Ibn 'Uyainah. Al-Awza'i narrated in his version the words: Beg pardon of Allah.

(A man broke his fast intentionally) during Ramadan. The Messenger of Allah (ﷺ) commanded him to emancipate a slave, or fast for two months, or feed sixty poor men. He said: I cannot provide. The Messenger of Allah (ﷺ) said: Sit down. Thereafter a huge basket of dates ('araq) was brought to the Messenger of Allah (ﷺ). He said: Take this and give it as sadaqah (alms). He said: Messenger of Allah, there is no poorer than I. The Messenger…

The Prophet (ﷺ) said: One of you should not say: I fasted the whole of Ramadan, and I prayed during the night in the whole of Ramadan. I do not know whether he disliked the purification; or he (the narrator) said: He must have slept a little and taken rest.

That the Prophet (ﷺ) entered upon her on Friday while she was fasting. He asked: Did you fast yesterday ? She said: No. He again asked: Do you intend to fast tomorrow ? She said: No. He said: So break your fast.

He said: Messenger of Allah, tell me about keeping fast on Monday and Thursday. He said: On it I was born, and on it the Qur'an was first revealed to me.

I asked 'Aishah: Would the Messenger of Allah (ﷺ) fast three days every month ? She replied: Yes. I asked: Which days in the month he used to fast ? She replied: He did not care which days of the month he fasted.

When one of you is invited (to a meal), and he is fasting, he should say that he is fasting.

The Prophet (ﷺ) used to observe I'tikaf during ten days of Ramadan every year. But when the year in which he died, he observed I'tikaf for twenty days.

When the Messenger of Allah (ﷺ) observed I'tikaf, he would put his head near me, and I would comb it. and he entered the house only to fulfill human needs (i.e. to urinate or to relieve himself).

The Messenger of Allah (ﷺ) used to observe I'tikaf in the mosque and put his head near me through the opening of the apartment, and I would wash his head. Musaddad said: "And I would comb it while I was menstruating."

According to the version of Al Nufaili, A’ishah said “The Prophet (ﷺ) used to pass by a patient while he was observing I’tikaf(in the mosque) but he passed as usual and did not stay asking about him.” According to the version of Ibn Isa she said “The Prophet (ﷺ) would visit a patient while he was observing I’tikaf.”

A’ishah(may Allaah be pleased with her) said “One of the wives of the Apostle of Allaah(ﷺ) observed I’tikaf along with him (in the mosque). She would see yellowness and redness. Sometimes we would place a washbasin while she prayed.”