Tashkik Aami says that the entities of the truths are different from all the essences, which are common in the truth of the concept of the unit of existence. A certain Tashkik believes that existence is a single truth, the reason for its unity is the connection of existence that expands in both longitudinal and transverse fields. The criterion of longitudinal multiplicity is perfection and imperfection, where the strong existence is in the higher order and the weak existence is in the lower order, the highest order of which is the divine nature and the lowest order of which is the first monster. The criterion in cross-examination is substantive differentiation. Of course, as stated, in fact, the substantive distinction returns to existence. A special doubt is that the existence of a single truth is simple, which is the existence of God Almighty, that all facts and objects, appearances and manifestations of this truth are one. In transversal formation, different beings are in the same rank and are not different in perfection and imperfection. Here, too, the criterion of suspicion is our reference to al-Amtiaz to al-Ashtarak, which is the common aspect of existence, and the aspect of privilege is nature, which of course returns to existence with the above statement.