The Role of Iranian Dabir's in the administrative organization of the Abbasid

Sasani empire’ s fall and the arrival Arab Muslem in Iran cause the mixing of Iranians with Islamic society. Dabirs held important Rositions and influenced manners and traditions specially in administrative and statecraft ceremonies. With Iranian influence in the Abbasid caliphate, caliph's utilized Persian customs. Mawali and new Muslim Iranians were in the Porefront of the Abbasid administrative organization. They started tasks in Umavid period to get special situation in Abbasid caliphate.In fact Iranain Mawali who started their tasks as Kattib continue with the arrival Divani dynasties in Abbasid time. Emergence of Vezir, emphasising on religion and state unity, and finally transmition tasks of Vezirs to kottab, trans Pormed their role in the Abbasid caliphate. This research endeavors througha descriptive and analytical manner and the study of historical of the source to study the kattib's task in administrative organization of the Abbasid, also to represent their duty in change and development of administrative organization.