Mulla Sadra
Mulla Sadra explained the proof of the sincere in a way different from both Avicenna's version as well as Suhrevardi's. The differentiation with Avicenna differs in the argument of the existence as an existent. Mulla Sadra begins his argument with an existent in the world until he reaches the necessary existent. Mulla Sadra also rejects Suhrawardi’s statement of the argument from contingency.