The proof of the existence of God is one of the most worrying human thoughts and they pose rigorous demonstrations on it. But arguments were generally based on the existence of creation. This group of arguments, while requiring the presence of the obligatory and the Almighty God, is subject to certain limitations in terms of some rational principles, such as "the essences of causes" and "what no reason is for it". So Islamic philosophers have come up with the arguments that do not have these limitations and its name is the proof of "Seddiqin".
 The first is Ibn Sina, then the second is Mulla Sadra, and after that his followers has presented another version. In considering that these arguments do not have the bottlenecks of the proofs of creation, there is a need for a measure to be used to measure these arguments; the criterion derived from the statements of the philosophers is that the proof of "from God to God" and, in the words of Mulla Sadra, the route and destination is to be one. Accordingly, according to Javadi Amoli, the only proof that is the standard is the proof of Allameh Tabatabai in "The Ascension of Asfar" and "The Principles of the Philosophy and the Method of Realism," but the proof of Ibn Sina and Mulla Sadra does not have such an attribute. The result is that Allameh's proof of Seddiqin is the proof of ultimate obligatory oneness and is not based on any theoretical problem in philosophy.