Q. Can you tell me some of the historical events that occurred on the day of Ashura?
A. According to authentic traditions the only historical event that took place on the day of Ashura was that Allah (SWT) allowed Prophet Musa (AS) and his followers to cross the Red Sea miraculously and the Pharoah was drowned in its water.
It was for this reason the Jews on Madinah were fasting on this day i.e. 10th Muharram. The Rasool (SAS) mentioned to them that we are more closely related to Musa (AS) than they were and he directed the Muslims to fast on this day (Abu Dawood).
And Allah knows best.
Mufti Majid Khan