ibn Umar · Fasting (Kitab Al-Siyam)

Explaining the verse; "For those who can do it (with hard-ship) is a ransom, the feeding of one, that is indigent," he said: This was a concession granted to the aged man and woman who were able to keep fast; they were allowed to leave the fast and instead feed an indigent person for each fast; (and a concession) to pregnant and suckling woman when they apprehended harm (to themselves).

The Prophet (ﷺ) said: The month consists of twenty-nine days, but do not fast till you sight it (the moon) and do not break your fast till you sight it. If the weather is cloudy, calculate it thirty days. When the twenty-ninth of Sha'ban came, Ibn Umar would send someone (who tried) to sight the moon for him. If it was sighted, then well and good; in case it was not sighted, and there was no cloud and dust before…

Once the people doubted the appearance of the moon of Ramadan, and intended neither to offer the tarawih prayer nor to keep fast. A bedouin came from al-Harrah and testified that he had sighted the moon. He was brought to the Prophet (ﷺ). He asked: Do you testify that there is no god but Allah, and that I am the Messenger of Allah? He said: Yes; and he testified that he had sighted the moon. He commanded Bilal who announced…

We broke the fast one during Ramadan when it was cloudy in the lifetime of the Messenger of Allah (ﷺ) ; then the sun rose. Abu Usamah said: I said to Hisham: Were they commanded to atone for it ? He replied: That was inevitable.

Mansur al-Kalbi said: Dihyah ibn Khalifah once went out from a village of Damascus at as much distance as it measures between Aqabah and al-Fustat during Ramadan; and that is three miles. He then broke his fast and the people broke their fast along with him. But some of them disliked to break their fast. When he came back to his village, he said: I swear by Allah, today I witnessed a thing of which I could not even think…

The Quraish used to fast on the day of 'Ashurah in pre Islamic days. The Messenger of Allah (ﷺ) would fast on it in pre-Islamic period. When the Messenger of Allah (ﷺ) came to Medina, he fasted on it and commanded to fast on it. When the fast of Ramadan was prescribed, that became obligatory, and (fasting on) 'Ashurah was abandoned. He who wishes may fast on it and he who wishes may leave it.

I asked 'Aishah: Would the Messenger of Allah (ﷺ) fast three days every month ? She replied: Yes. I asked: Which days in the month he used to fast ? She replied: He did not care which days of the month he fasted.

When the Messenger of Allah (ﷺ) intended to observe I'tikaf, he prayed the fajr prayer and then entered his place of seclusion. Once he intended to observe I'tikaf during the last ten days of Ramadan. She said: He ordered to pitch a tent for him, and it was pitched. She said: The other wives of the Prophet (ﷺ) also ordered to pitch tents for them and they were pitched. When he offered the fajr prayer, he saw the tents, and…

The sunnah for one who is observing i'tikaf (in a mosque) is not to visit a patient, or to attend a funeral, or touch or embrace one's wife, or go out for anything but necessary purposes. There is no i'tikaf without fasting, and there is no i'tikaf except in a congregational mosque.