The Al-Kadhimiya Mosque, Baghdad, Iraq, a shrine containing the tombs of the seventh Twelver Shi'ah Imam Musa al-Kadhim and the ninth Twelver Shi'ah Imam Muhammad at-Taqi. Also buried within this mosque are the famous historical scholars, Shaykh Mufid and Shaykh Nasir ad-Din Tusi. This is the celebration of the Day of Ashura (Ashoura) is on the 10th day of Muharram in the Islamic calendar and marks the climax of the Remembrance of Muharram. It is commemorated by Shia Muslims as a day of mourning for the martyrdom of Husayn ibn Ali, the grandson of the Islamic Prophet Muhammad at the Battle of Karbala.