A Comparative Study of the Rules of Basit al-Haqiqah and Sirf al-shy` for the Orders of Monotheism

The purpose of this paper is not to prove the levels of monotheism (essence, attributes, and actions), but rather the role of the two principles based on its philosophical principles, namely, the fundamentality of existence and the fundamentality of quiddity in proving the levels of monotheism. In this paper, an attempt has been made to survey the difference of the two views of  fundamentality of existence and fundamentalty of quiddity with an analytical and reasonable method. The hypothesis is that the levels of monotheism may not be explained through the rule of sirf al-shay`. While, on the basis of the rule of basit al-haqiqah, carrying the meaning of God`s fundamentality of existence and existential absoluteness, one may, opposing the pluralistic view of those beliving in fundamentality of quiddity and essential difference of beings, prove His Simplicity and the True Unique Existence. And it is also proved that not only the quality and perfections of creatures but all their acts and effects also originate from It and form Its stages and manifestation.