The development of philosophical thought in the Muslim world is undoubtedly associated with the name of Ibn Sina. His contribution to the history of philosophy can be said to have adapted Greek metaphysics to Islamic theology. It is now that the commonalities between religion and philosophy in theological issues are gaining relevance for researchers. The correct interpretation of the scholars theological works also requires great knowledge. The article examines the study of Ibn Sinas theological legacy in the West, the views of Ibn Rushd and Ghazali on the philosophy of scholars, as well as the use of methodology in the study of theology.