The role of dabirs in establishment and development of Islamic administration in the first century A.H

After the formation of Islamic Governement by the prophet Mohammad in medina and expansion of Islamic territory to the whole Arabia Peninsula and then to realm of Persian and Roman empires, the establishment and development of a financial and administrative organization was inevitable. Accordeing to historical sources, the heritage of Persian administration was entered into Islamic organization by dabirs. The main question of this paper is: What were the factors of entering and continued presence of dabirs in Islamic bureaucracy? What were consequences of their presence? It is shown that Iranian dabirs had an essential role in the formation and development of Islamic financial and administrative organization and especially in the arabization process of diwāns.