What did the Prophet Muhammad (saw) say when he asked the Jews about why they were observing the fast on the 10th of Muharram?
 Narrated Ibn `Abbas:                     When Allah's Apostle arrived at Medina, he found the Jews observing the fast on the day of 'Ashura' (10th of Muharram). The Prophet asked them (about it) and they replied, "This is the day when Moses became victorious over Pharaoh." The Prophet said (to the Muslims), "We are nearer to Moses than they, so fast on this day."