Abu Huraira reported Allah's Messenger ﷺ as saying, “When a man dies no further reward is recorded for his actions, with three exceptions

‘A'isha said that when she had some part of the fast of Ramadan to make up she would be able to do so only in Sha'ban. Yahya b. Sa'id said she meant this was due to her being kept from it by her duty to the Prophet. (Bukhari and Muslim.)

Abu Huraira reported Allah's Messenger ﷺ as saying, “It is not allowable for a woman to fast when her husband is present without his permission,* and she may not allow anyone to enter his house without his permission.” *This refers not to Ramadan, but to a supererogatory fast. Muslim transmitted it.

Mu'adha al-‘Adawiya said that when she asked ‘A'isha why one who has been menstruating must make up for her fast but not for her prayer, she replied, “That happened to us, and we were ordered to make up for the fast, but were not ordered to make up for the prayer.” Muslim transmitted it.

‘A'isha reported Allah's Messenger ﷺ as saying, “If anyone dies when some fast due from him has been unfulfilled, his heir must fast on his behalf.” (Bukhari and Muslim.)

Nafi‘, on Ibn ‘Umar’s authority, reported the Prophet (ﷺ) 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.

Malik said he heard that Ibn ‘Umar used to be asked whether one might fast or pray on behalf of another, and reply, “One may neither fast nor pray on behalf of another.” He transmitted it in al-Muwatta’.

‘A'isha said, "Allah’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 Allah's Messenger ﷺ 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.)

‘Abdallah b. Shaqiq said that when he asked ‘A'isha whether the Prophet (ﷺ) used to fast a whole month she replied, "I never knew him to fast a whole month except Ramadan, nor to refrain from fasting some part of every month till he died." Muslim transmitted it.

‘Imran b. Husain said that the Prophet (ﷺ) asked him, or that he asked a man in ‘Imran’s hearing, “Father of so and so, did you not fast the last day of Sha'ban?" When, he replied that he had not, he said, “If you did not observe a fast, you must fast for two days."* *To reconcile this tradition with that of Abu Huraira at the foot of p.420 it is suggested that the man had made a vow to observe this fast, or that it was his custom. (Bukhari and Muslim.)

Abu Huraira reported Allah's Messenger ﷺ as saying, “The most excellent fast after Ramadan is in Allah’s month al-Muharram, and the most excellent prayer after what is prescribed is prayer during the night." Muslim transmitted it.