Chapter on the recommendation to fast three days of every month, and that the most virtuous time is during the White Days—namely the thirteenth, fourteenth, and fifteenth. Some hold that they are the twelfth, thirteenth, and fourteenth, but the sound and well-known view is the first.

1258 – Abu Hurayrah (may Allah be pleased with him) said: “My close companion ﷺ advised me regarding three things: fasting three days of every month, praying two rakʿahs of Duha, and performing Witr before I sleep.” Agreed upon.

1259 – Abu al-Dardaʾ (may Allah be pleased with him) said: “My beloved ﷺ enjoined upon me three practices that I will never abandon as long as I live: fasting three days of every month, the Duha prayer, and not sleeping until I have offered Witr.” Recorded by Muslim.

1260 – ʿAbd Allah ibn ʿAmr ibn al-ʿĀṣ (may Allah be pleased with them) narrated that the Messenger of Allah ﷺ said, “Fasting three days of every month equals fasting for a lifetime.” Agreed upon.

1261 – Muʿādhah al-ʿAdawiyyah asked ʿĀʾishah (may Allah be pleased with her), “Did the Messenger of Allah ﷺ use to fast three days of every month?” She replied, “Yes.” I asked, “At what time of the month did he fast them?” She said, “He did not mind which days of the month he fasted.” Recorded by Muslim.