Younis, Mohsen, and Ramia Jame. 2019. “Abdul Rahman Al- Dakhl Relationship With the Abbasid Caliphate in Baghdad (138-172 AH/756-788 AD )”. Tishreen University Journal- Arts and Humanities Sciences Series 41 (6). https://journal.tishreen.edu.sy/index.php/humlitr/article/view/9265.