The relationship of politics to religion is a characteristic feature of Islam. The rules of divine law have to be unswervingly respected in all matters related to social, economic and political problems, or at least should not contradict the essence of Islamic principles. But despite this, the political doctrine of Islam — the caliphate, being the main medieval Muslim political thought, still caused many controversies due to the lack of regulations on the nature of power in the Qur’an and Sunnah. Many scholars of the Islamic world, understanding the origins of the problem, tried in every way to write the concept of Islamic political science. Even the existence of political ideas related to the authority in Islam in such Muslim writings on the caliph could not reveal and provide the theory of government from a religious point of view. These works are mostly devoted to the art of power and refl ect the norms of behavior of the ruling authorities and other representatives of the state in order to solve the necessary tasks of national importance. The Islamic experience of the thinkers who wrote these works justifi es the existence of an Islamic element in them. The art of government has been revealed to them since the emergence of Islamic practice in their lives. But there were theories of Islamic political science based on the Koran and the Sunnah. Al-Mawardi is one of the authors of books on Islamic political science. His books became very important for subsequent Muslim thinkers, this importance lies in the fact that the very followers who wrote works on political theory accepted al-Mawardi as an authority on this issue and continue to accept not only for the theory of the caliphate/imamate, but also because of his works related to public law. It is important to note that the work of al-Mawardi is the fi rst work, which presents the theory of the imamate/caliphate, taking into account the political conditions that surrounded him.