Mu'adha al-‘Adawiya said she asked ‘A'isha whether God’s messenger used to fast three days every month, and she replied that he did. She asked which days in the month he fasted, and she replied that he did not care which days of the month he fasted. Muslim transmitted it.

Abu Ayyub al-Ansari told that God’s messenger said,“If anyone fasts during Ramadan, then follows it with six days in Shawwal, it will be like a perpetual fast.”Muslim transmitted it.

Abu Sa'id al-Khudri said God’s messenger forbade fasting on the day of breaking the fast of Ramadan and on the day of sacrifice. (Bukhari and Muslim.)

He reported God’s messenger as saying,“No fast is to be observed on two days, al-Fitr and al-Adha.* *In this tradition I have used the Arabic words, but have translated them in the preceding tradition. In the preceding tradition an-nahr is used where al-Adha is used here. Al-Adha means literally the victims. (Bukhari and Muslim.)

Nubaisha al-Hudhali reported God’s messenger as saying,“The days of at-tashriq* are days of eating, drinking, and remembrance of God.”*The three days after the sacrifice on the tenth of Dhul Hijja. The name is said to have been given because the flesh of the victims is cut into strips and put in the sun to dry; but other explanations are also given. Muslim transmitted it.

Abu Huraira reported God’s messenger as saying.“None of you must fast on a Friday unless he fasts the day before or the day after.”(Bukhari and Muslim.)

He reported God’s messenger as saying,“Do not choose Thursday night as a particular night for prayer, and do not choose Friday as a particular day for fasting, unless it occurs during a fast one of you is observing.”Muslim transmitted it.

Abu Sa‘id al-Khudri reported God’s messenger as saying,“If anyone fasts for a day while engaged in jihad, God will remove him* seventy years’ distance from hell.”*Literally, ‘his face’. (Bukhari and Muslim.)

‘Abdallah b. ‘Amr b. al-‘As told of God’s messenger saying to him,“Have I not been informed, ‘Abdallah, that you fast during the day and get up at night for prayer?” [Mirqat explains this as meaning all night.] When he replied that that was so, he said,“Do not do it. Fast and break your fast, get up for prayer and sleep, for you have a duty to your body, your eye, your wife, and your visitors. May he who observe a perpetual fast never fast!* Fasting three days every month is equivalent to a perpetual fast. Fast three days every month and recite the Qur'an every month.”When he replied that he was able to do more than that, he said,“Observe the most excellent fast, that of David, fasting every second day, and recite the Qur’an once every seven nights, but do no more than that.”* Cf. the similar phrase in the tradition of Abu Qatada (p.434). Some hold that the meaning here is, ‘He who observes a perpetual fast has not fasted.’ (Bukhari and Muslim.)

‘A'isha said that God’s messenger used to fast on Mondays and Thursdays. Tirmidhi and Nasa’i transmitted it.