Al-Mahdi
Abū ʿAbd Allāh Muḥammad ibn ʿAbd Allāh al-Mahdī (; 744 or 745 – 785), better known by his regnal name al-Mahdī (, "He who is guided by God"), was the third Abbasid Caliph who reigned from 775 to his death in 785. He succeeded his father, al-Mansur. Provided by Wikipedia-
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