This essay seeks to explain Mulla Sadra's philosophical-mystical encounter with the problem of death. The main question of this study is the explanation of the truth of death and its aspects from Mulla Sadra’s point of view. In this article, we do not merely focus on the philosophical vision of Mulla Sadra on death; rather, we explain the mystical views of Mulla Sadra, independently from his philosophical ideas, too. Thus, this research is innovative in its simultaneous explanation of the philosophical and mystical truth of death and its aspects from Mulla Sadra’s perspective. In his ontology, Mulla Sadra provides an account of the evolutionary course of the soul's development relying on such principles as principality of existence, the fre...