Abu Dharr reported God’s messenger as saying, “When you fast three days in the month, Abu Dharr, fast on the thirteenth, fourteenth and fifteenth.” Tirmidhi and Nasa'i transmitted it.

‘A'isha said that God’s messenger used to fast on Saturday, Sunday, and Monday one month, and on Tuesday, Wednesday, and Thursday the next. Tirmidhi transmitted it.

Abu Huraira said that God’s messenger prohibited fasting on the day of ‘Arafa at ‘Arafa. Abu Dawud transmitted it.

Umm Salama said that God's messenger used to fast on Saturdays and Sundays more than on other days, and he used to say, “They are days of festival for the polytheists, and I like to act contrary to them.”Ahmad transmitted it.

He said that the Prophet used to fast on Mondays and Thursdays, and when someone remarked on this to him he said, “On Monday and Thursday God forgives every Muslim except two who are at variance, for He says they must be left till they make peace with one another.”Ahmad and Ibn Majah transmitted it.

Umm Hani’ said that on the day of the conquest of Mecca Fatima came and sat on God’s messenger’s left and Umm Hani on his right, and when the maidservant brought a vessel containing; drinking water and handed it to him, he drank some of it and handed it to Umm Hani’ who drank some of it. She then said, “Messenger of God, I was fasting and I have broken my fast.” He asked if she was making up for anything, and when she replied that she was not, he said, “It will not harm you if it was a voluntary fast.” Abu Dawud, Tirmidhi and Darimi transmitted it. A version by Ahmad and Tirmidhi has something similar. In it she said, “Messenger of God, I was fasting,” and he replied, “The one who observes a voluntary fast is his own master; if he wishes he may fast, and if he wishes he may break it.”

Buraida said that once when Bilal went in to visit God’s messenger while he was having his morning meal he invited him to join him, and when Bilal replied that he was fasting, he said, “We are eating our provision and Bilal’s superior provision is in paradise. Did you know, Bilal, that the bones of one who fasts extol God and that the angels ask forgiveness for him as long as people eat beside him?” Baihaqi transmitted it in Shu'ab al-iman.

‘A'isha reported God's messenger as saying, “Seek lailat al-qadr on an old number night among the last ten in Ramadan.” Bukhari transmitted it.

Ibn ‘Abbas reported the Prophet as saying, “Seek lailat al-qadr in the last ten nights of Ramadan, on the twenty-first, twenty-third and twenty-fifth.” Bukhari transmitted it.

God’s messenger spent the first ten nights of Ramadan in devotion, and spent the middle ten nights in devotion in a round Turkish tent, after which he raised his head and said, “I have spent the first ten nights in devotion seeking this night, then I spent the middle ten nights in devotion, and after that I had a heavenly visitant and was told that it is in the last ten, so he who has engaged in devotion along with me should do so during the last ten nights, for I was shown this nights, then was caused to forget it, but I have seen myself prostrating in water and clay on the morning following, so seek it among the last ten and seek it in every night with an odd number.” He said: Rain fell that night, the mosque which was a thatched building dripped, and my eyes saw God’s messenger with traces of water and clay on his forehead on the morning after the twenty-first night. Bukhari and Muslim agree on the subject-matter, the wording being Muslim's up to “and was told it is it the last ten”, the remainder being Bukhari's. In the version of ‘Abdallah b. Unais he said it was the twenty-third night.Muslim transmitted it.

I questioned Ubayy b. Ka'b about a statement by his brother [not actual brother] Ibn Mas'ud to the effect that anyone who gets up for prayer every night in the year will hit upon lailat al-qadr, and he replied, “God have mercy on him! He meant that people should not content themselves [with that might alone]. He knew that it was in Ramadan among the last ten nights and that it was the twenty-seventh.” He then swore without any reservation that it was the twenty-seventh, and when I asked, “On what ground do you state that, Abul Mundhir? [Ubayy's kunya]” he replied, “By the indication (or sign)* of which God’s messenger informed us, viz. that the sun rises on that day without rays.” *An alternative, the transmitter not being sure which word was used.*An alternative, the transmitter not being sure which word was used.Muslim transmitted it.

‘A'isha said that God’s messenger used to exert himself in devotion during the last ten nights to a greater extent than at any other time.Muslim transmitted it.

Abu Huraira said that the Qur’an was gone over* to the Prophet once annually, but that this was done twice in the year in which he died. He used to engage in private devotions in the mosque during ten nights every year, but he did this during twenty nights in the year in which he died. *Mirqat remarks that some expositors say the passive is used here because the person who went over the Quran to the Prophet was well-known, viz. Gabriel.Bukhari transmitted it.

‘A'isha said that when God’s messenger intended to engage in private devotion in the mosque he prayed the dawn prayer and then entered his place of seclusion. Abu Dawud and Ibn Majah transmitted it.

She said that the sunna for one who is observing a period of private devotion in a mosque is not to visit an invalid, or attend a funeral, or touch or embrace one’s wife, or go out for anything but necessary purposes. There is no period of private devotion in a mosque without fasting, and it must be carried out in a congregational mosque. Abu Dawud transmitted it.

Nafi‘, on Ibn ‘Umar’s authority, reported the Prophet as saying, “If anyone dies when fasting in the month of Ramadan has been unfulfilled by him, a poor man should be fed on his behalf in place of every day.” Tirmidhi transmitted it, saying that correctly this goes no farther back than Ibn ‘Umar.

‘A'isha said, "God’s messenger used to fast to such an extent that we thought he would never break his fast, and he would go without fasting to such an extent that we thought he would never fast. I never saw God’s messenger fast a complete month except in Ramadan, and I never saw him fast more in any month than in Sha'ban." In a version she said he used to fast the whole of Sha'ban, i.e. he would fast all but a little of Sha'ban. (Bukhari and Muslim.)

Ibn ‘Abbas said, "I never saw the Prophet singling out any day’s fast and considering it more excellent than another, except this day, the day of ‘Ashura’,* and this month, meaning the month of Ramadan."*The 10th of Muharram.(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.)