Hosain gave battle, vainly relying on the promised aid from Kufa, and fell with almost all his followers on the 10th of Muharram 61 (loth of October 680).
The day after Barkiyaroq's triumphant entry into Bagdad, Muharram 487 (February 1094), he died suddenly, apparently by poison.
On the 11th of Muharram 656 (January 1258) Hulaku arrived under the walls of the capital.
This unfortunate man died under torture, which he bore with fortitude, in Muharram 126 (November 743).
The era begins from the first day of the month of Muharram preceding the flight, or first day of that Arabian year which coincides with Friday, July 16, 622 A.D.