Ibn 'Abbas reported that when the Messenger of Allah (ﷺ) fasted on the day of 'Ashura and commanded that it should he observed as a fast, they (his Companions) said to him:
| Reference | : Sahih Muslim 1134a |
| In-book reference | : Book 13, Hadith 172 |
| USC-MSA web (English) reference | : Book 6, Hadith 2528 |
| (deprecated numbering scheme) |