Allāma Tabātabāī can be considered an innovative philosopher and even the owner of a new school in the last century of Qom seminary. He has presented some new ideas despite having intellectual commonalities with other philosophers. One of them is the unconditional unicity (waḥdat etlāghi). By philosophical explaining the verses and hadiths, Allāma describes the Absolute Existence as a pure existence that leaves no room for anything else. Of course, it's not like he doesn't accept anything else like the Jáhlehyeh Ṣūfiyya, but he accepts that everything other than God, but they are only as a relevant and associated existence. Also connection and association constitute all their qualities. Unlike some previous philosophical systems, Allāma believes that everything other than God does not have the merit to be the second absolute existence. Allāma’s way of reaching this point of view is due to the fact that on the one hand, he considers the essence to be the appearance of the conditional and near the mind existence, and on the other hand, the effect is the same as connection and association to the cause. the unconditional unicity (waḥdat etlāghi) also has epistemic findings; Among them, the dual division of existence into conditional and unconditional, explaining the relationship between God and that everything other than God based on truth and subtlety, the God’s unconditional perfections, and the God’s true ownership.