'A'isha (Allah be pleased with her) reported. In the pre-Islamic days fast was observed on the day of Ashura, but with the advent of Islam (its position was ascertained as that of a voluntary fast). Then he who wished to fast fasted, and he who liked to abandon it abandoned it.
Reference | : Sahih Muslim 1125c |
In-book reference | : Book 13, Hadith 145 |
USC-MSA web (English) reference | : Book 6, Hadith 2501 |
(deprecated numbering scheme) |