English translation
3397. Narrated Ibn 'Abbās رضي الله عنهما: When the Prophet ﷺ came to Al-Madīna, he found (the Jews) observing fasting on the day of 'Āshūrā' (i.e., 10th of Muḥarram). They used to say: "This is a great day on which Allāh saved Mūsā (Moses) and drowned the folk of Fir'aun (Pharaoh). Mūsā observed the fast on this day, as a sign of gratitude to Allāh." The Prophet ﷺ said, "I am closer to Mūsā than they." So, he observed the fast (on that day) and ordered (the Muslims) to observe fasting on that day.
