483 Hasan b. as-Sabbah seizes Alamut.
485 Nizam al-Mulk assass.
488 Al-Ghazzali leaves Baghdad.
505 Al-Ghazzali d.
515 ‘Umar al-Khayyam d.
516 Al-Baghawi d.
524 Ibn Tumart al-Mahdi d.
524-558 ‘Abd al-Mu’min.
524-667 The Muwahhids.
533 Abu Bakr b. Bajja d.