al-Walid bin Muslim al-Quraishi الوليد بن مسلم القرشي · Fasting (Kitab Al-Siyam)

The Messenger of Allah (ﷺ) asked a man: Did you fast the last day of Sha'ban ? He replied: No. He said: If you did not observe a fast, you must fast for a day. One of the two narrators said: For two days.

AbulAzhar al-Mughirah ibn Farwah said: Mu'awiyah stood among the people at Dayr Mustahill lying at the gate of Hims. He said: O people, we sighted the moon on such-and-such day. We shall fast in advance. Anyone who likes to do so may do it. Malik ibn Hubayrah as-Saba'i stood up and asked: Mu'awiyah, did you hear the Messenger of Allah (ﷺ) say something (about this matter), or is this something on the basis of your opinion? He replied: I heard…

A man from Banu Abdullah ibn Ka'b brethren of Banu Qushayr (not Anas ibn Malik, the well-known Companion), said: A contingent from the cavalry of the Messenger of Allah (ﷺ) raided us. I reached (for he said went) to the Messenger of Allah (ﷺ) who was taking his meals. He said: Sit down, and take some from this meal of ours. I said: I am fasting, he said: Sit down, I shall tell you about prayer and fasting. Allah has…

The Messenger of Allah (ﷺ) as saying: None of you must fast on Friday unless he fasts the day before or the day after.

When it was mentioned to Ibn Shihab (al-Zuhri) that fasting on Saturday had been prohibited, he would say: This is a Himsi tradition.

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.”