Death of Zaynab (daughter of Ali), Rajab 15. Zaynab, daughter of Ali ibn Abi Talib and Fatimah, is a recognized figure in Islamic history who played a significant role in the events following the Battle of Karbala. In some communities, this day is observed a commemoration of Zaynab, with gatherings focused on reflecting upon her life and her role in history. The significance of this date is mainly due to Zaynab's position in historical and cultural narratives related to the aftermath of Ashura.