Religious knowledge is consists of doctrines that could be attain with amethodological cognition and inquiry concerning religious sources. But thePrerequisite of This kind of knowledge is some principles that from whichscholarly studies on religion is begin and leads to conclusion. AllamehTabatabaei, in his efforts to achieve a regular and accurate cognition ofReligion according to his Special principles, has focused on this point andintroduces some presuppositions that with exceeding from which one mayperceive religious teachings. He has also two presuppositions:epistemological and ontological. The possibility of analyzing and evaluatingof religious knowledge, is an epistemological presupposition; and belief inGod, religion, human ability and the world of existence, is considered asontological presupposition. So he believes that an accurate understanding ofreligion would be possible only if we try to transcend from thesepresuppositions and use our principles of religious knowledge.