The entirety of Karbala Province is located here, and is notable as the place of martyrdom and burial of Imam Husain (grandson of Prophet Muhammad, son of Hazrat Ali ibn Abi-Talib, and the third Shiite Imam). His martyrdom at the Battle of Karbala, at the hands of the army of Ummayad Caliph Yazid I, cemented the split between the Shiite and Sunni branches of Islam. Karbala contains the Mausoleum of Imam Hussain as well as that of Hazrat Abbas Alamdar (the brother of Imam Hussain as well the flag-bearer and the Commander-in-chief of Hussain's caravan). Imam Husain's caravan consisted of 96 individuals including women and children and were called Ahle-Bayt as they represented most of the living members of the Prophet Muhammad's family. On the 10th of the Islamic lunar month of Muharram, 72 members of the Ahle-Bayt were martyred by Yazid's Army, and the rest were taken to and imprisoned in Damascus. The 10th of Muharram is called "Ashura" and is the most important day of mourning and atonement by Shiite Muslims and well as some brances of Sunni Islam. The Mausoleums of Imam Hussain and Hazrat Abbas Alamdar are important pilgrimmage sites to Shiites second only to Mecca and Medina.