Philosophical inquiry into practical matters, similar to theoretical views, has been a subject of investigation by Islamic thinkers. The viewpoints of Muslim wise men (hakims) regarding the nature of practical reason and propositions based on it have varied. Some of them, like Avicenna, Khwaja Nasir al-Din Tusi, and Allameh Tabataba'i, consider practical reason propositions to be of the type of "mashhurat" (common opinions) and "e'tebariyat" (Conventionalities) among humankind, positing no reality beyond them. Therefore, they deem practical rational insights unusable in demonstrative arguments. Others, such as Mulla Hadi Sabzevari, Lahiji, and Mohammad Baqir Sadr, emphasize the certainty and reality of these propositions and believe that practical reason propositions can be used in demonstration. This article, using a descriptive-analytical method, re-examines the views of some hakims and theologians to contribute to the understanding of the identity of practical reason and the philosophy of ethics among Islamic thinkers.
Rahman Ehterami (Sat,) studied this question.