There are different propositions regarding the cooperation of the Shia with the oppressive rulers, especially the acceptance of positions by them. This cooperation was significantly manifested during the Abbasid period. In this regard, the purpose of the present historical study was to investigate the acceptance of officials and cooperation with the oppressive government in the political path of Imam Sadiq (AS). Despite the reports that indicated the prohibition of cooperation with the government, some of the followers of Imam Sadiq (AS) cooperated with the Abbasid caliphate in various fields and held positions, such as governing different regions, judging, and keeping treasury. The Abbasids were not sensitive to these collaborations as long as their government was not threatened. For example, Abdullah bin Senan was trusted by the Shiites and was as the same time among the financial and military officials of the Abbasids. It seems that the sanctity of any kinds of cooperation and acceptance of office, in addition to the Kharijites, was strongly emphasized and propagated by the Zaidis in favor of the armed uprising. They objected the Imam (AS) and wanted to know why he was interacting with a government that he considered invalid. The many and numerous questions of the Shias from the Imam (AS), as well as the narrations from him about cooperation, showed the contrast of different approaches during the period of Imam Sadiq (AS).