Fasting On The Day Of Ashura (10th Muharram)
This narration of Sunan An-Nisai quoted above is Daef (weak) according to Shiekh Albani and Shiekh Zubair Ali Zai. Please see : https://islamicurdubooks.com/hadith/hadith-.php?bookid=5&hadith_number=2418 __ As for the fast of Ashura , please see: Discussion 14832 • Reply 15013