A woman made a voyage and vowed that she would fast one month if Allah made her reach her destination with peace and security. Allah made her reach her destination with security but she died before she could fast. Her daughter or sister (the narrator doubted) came to the Messenger of Allah (saws). So he commanded to fast on her behalf.

'A'isha reported that when the Messenger of Allah (may peace be upon him) decided upon doing any act, he continued to do it, and when he slept at night or fell sick he observed twelve rak'ahs during the daytime. I am not aware of Allah's Messenger (may peace be upon him) observing prayer during the whole of the night till morning, or observing fast for a whole month continuously except that of Ramadan.

"It was said, 'O Messenger of Allah, what equals Jihad?' He said: 'Verily, you (people) are not capable of it.' So they repeated it to him two or three times, each time he said, 'You (people) are not capable of it.' Then he said the third time: 'The example of the Mujahid in the path of Allah is like the one who fasts and stands (in prayer) and does not slacken from Salat, nor fasting, until the Mujahid in the cause of Allah returns.'"

There are narrations on this topic from Ash-Shifa', 'Abdullah bin Hubshi, Abu Musa', Abu Sa'eed, Umm Malik Al-Bahziyyah, and Anas.

This Hadith is a Hasan Sahih. And it has been reported through more than one route from Abu Hurairah from the Prophet (saws).

Yahya related to me from Malik from Hisham ibn Urwa from his father that A'isha, the wife of the Prophet, may Allah bless him and grant him peace, said, "The day of Ashura was a day the Quraysh used to fast in the jahiliyya, and the Messenger of Allah, may Allah bless him and grant him peace, used also to fast it during the jahiliyya. Then when the Messenger of Allah, may Allah bless him and grant him peace, came to Madina he fasted it and ordered that it be fasted. Then Ramadan was made obligatory, and that became the fard instead of Ashura, but whoever wanted to, fasted it, and whoever did not want to, did not fast it."

The father or Uncle of Mujibah al-Bahiliyyah visited the Messenger of Allah (saws). He then went away and came to him (again) after one year when his condition and appearance had changed.

He said: Messenger of Allah, do you not recognize me? He asked: Who are you? He replied: I am al-Bahili who came to you last year. He said: What has changed you? You were looking well, then you were good in appearance? He said: I have only food at night since I departed from you.

Thereupon the Messenger of Allah (saws) said: Why did you torment yourself? Fast during Ramadan (the month of patience) and fast for one day every month. He said: Increase it for me, for I have (more) strength. He said: Fast two days. He again said: Increase it for me. He said: Fast three days. He again said: Increase it for me. He said: Fast during the inviolable months and then stop; fast during the inviolable months and then stop; fast during the inviolable months and then stop. He indicated by his three fingers, and joined them and then opened them.

The Messenger of Allah (saws) used to command us to fast the days of the white (nights): thirteenth, fourteenth and fifteenth of the month. He said: This is like keeping perpetual fast.

When Allah's Apostle and his companions arrived (at Mecca), the pagans said, "There have come to you a group of people who have been weakened by the fever of Yathrib (i.e. Medina)." So the Prophet ordered his companions to do Ramal (i.e. fast walking) in the first three rounds of Tawaf around the Ka`ba and to walk in between the two corners (i.e. the black stone and the Yemenite corner). The only cause which prevented the Prophet from ordering them to do Ramal in all the rounds of Tawaf, was that he pitied them.

Yahya related to me from Malik from Hisham ibn Urwa from his father that Hamza ibn Amr al-Aslami once said to the Messenger of Allah, may Allah bless him and grant him peace, "Messenger of Allah, I am a man who fasts. Can I fast when travelling?" The Messenger of Allah, may Allah bless him and grant him peace, said, "If you want you can fast, and if you want you can break the fast."

This hadith has been narrated on the authority of Sulaiman Taimi with the same chain of transmitters and, at the end, it was said that the first Adhan was meant to awaken those who were in slumber amongst them and in order to make them turn who stand in (prayer) among them (towards food at the commencement of the fast). Jarir (one of the narrators) said that the Messenger (may peace be upon him) did not say like this but he said like it (true dawn) that the streaks of (true dawn ) are horizontal and not vertical.

The Prophet (saws) said: Do not fast (for Ramadan) before the coming of the month until you sight the moon or complete the number (of thirty days); then fast until you sight the moon or complete the number (of thirty days).

Yahya related to me from Malik from Ibn Shihab from Hunayd ibn Abd arRahman ibn Awf from Abu Hurayra that a man broke the fast in Ramadan and the Messenger of Allah, may Allah bless him and grant him peace, ordered him to make kaffara by freeing a slave, or fasting two consecutive months, or feeding sixty poor people, and he said, "I can't do it." Someone brought a large basket of dates to the Messenger of Allah, may Allah bless him and grant him peace, and he said, "Take this and give it away as sadaqa." He said, "Messenger of Allah, there is no-ne more needy than I am." The Messenger of Allah, may Allah bless him and grant him peace, laughed until his eye-teeth appeared, and then he said, "Eat them."