Sahih Muslim Hadith 2660

English

[2660] 129 – (1131) It was narrated that Abü Müsâ [may Allah be pleased with them] said: "The day of 'Ay]z2râ' was a day that was venerated by the Jews, who used to take it as a festival. The Messenger of Allah said 'You (Muslims) should fast (on this day)."