Abū Muḥammad ʿAbd Allāh ibn ʿAlī (Arabic: أبو محمد عبد الله بن علي; fl. 712 – 764 CE) was a member of the Abbasid dynasty, and played a leading role in its rise to power during the Abbasid Revolution. As governor of Syria, he consolidated Abbasid control over the province, eliminating the remnants of the Umayyad dynasty and suppressing pro-Umayyad uprisings. After the death of his nephew and first Abbasid caliph, al-Saffah, in 754, he launched a bid for the caliphal title against al-Saffah's brother, al-Mansur, but was defeated and imprisoned. He was killed in 764.
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