122 A historical table of the most important events related to the idea of Al-Mahdiyyah Year Gregorian Calendar 656 - 661 480 685 - 687 762 - 763 860 910 928 944 - 967 996 - 1021 1072 - 1092 The Caliphate of Ali The martyrdom of Hussein in Karbala The revolt of Mukhtar in Iraq The revolts of the Alawites in Iraq and Medina The appearance of the Qarmatians Ubayd Allah al-Mahdi and the beginning of the Fatimid state The Qarmatians enter Mecca and carry away the Black Stone Sayf al-Dawla al-Hamdani, ruler of Aleppo The Caliphate of Al-Hakim bi-Amr Allah al-Fatimi The vizierate of Nizam al-Mulk