Al-Mahdi
Muhammad ibn Mansur al-Mahdi (Arabic: محمد بن منصورالمهدى ) (born: 126 or 127 AH; died: 169 AH) (born: 744 or 745 AD; died: 785 AD), was the third Abbasid Caliph who reigned from 158 AH to 169 AH (775–785). He succeeded his father, al-Mansur.
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