From Left to Right:Ibn-Sina,Mulla-Sadra,Suhrawardi
Three kind of approach to philosophy:
These three Iranian philosopher has three ideas about relationship between philosophy and religion and in general metaphysics.This point should be notated all these people said that reasoning process shouldn't be affected by religious beliefs but had different ideas about how to Ask questions or how to result from these reasons. which have expressed below
1.Ibn-Sina maybe is the most secular Islamic philosopher until now.He has a kind of philosophy that are current yet all over the world.He believe that we shouldn't involve metaphysics in philosophy and that this science should be firm with reasons that can't be suspected at all.Of course we know that all of the sciences has bases of metaphysics like "all acts has cause",etc.This kind of philosophy referred as "Mashaa'".Maybe this though origin from his job.Contrary to others that have just one job he was really a physician before philosopher.
2.Suhrawardi said we should make our questions from our apocalypse and then solve this questions bi virtue of firm reasons but the result isn't important.This kind of philosophy called "Ishraq".His Nickname is "Shaykh-ol-Ishraq" that means Master of "Ishraq".
3.Mulla-Sadra said we should make our questions from our religious beliefs and apocalypse and after that use reasoning to arrive to a result.But these result is important because shouldn't be paradoxical with our beliefs,etc.