"Abu Abdallah Muhammad ibn Abdallah al-Mansur (Arabic: أبو عبد الله محمد بن عبد الله المنصور; 744 or 745 – 785), better known by his regnal name Al-Mahdi (المهدي, "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." - (en.wikipedia.org 12.12.2021)
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