First Imam: Amiru 'l-Mu'minin Abu 'l-Hasan `ALI al-Murtaza, son of Abu Tālib, was born on 13th Rajab, 10 years before the declaration of the Prophethood (600 A.D.), inside the Ka`bah; became Imam, on the death of the Prophet on 28th Safar, 11/632; was fatally wounded by the poisoned sword of Ibn Muljim while engaged in prayers at the mosque of Kufa (Iraq), and expired two days later on 21st Ramadhan, 40/661 and was buried at an-Najaf (Iraq).