Priority of the Proof of the Truthfuls over all others for the Existence of Allah

One of the most important issues of philosophy is to prove the existence of Allah. Naturalist philosophers, theologians and metaphysicians have since long been trying to prove the existence of Allah. The top-class philosophers such as Farabi,  Ibn Sina, al-Tusi, Mulla Sadra and his followers have considered each of the physico-theological arguments of motion, that of theologians from the temporal world and that of philosophers from contingency valid arguments; nonetheless, they hold that those arguments fail to prove the simple whetherness (whether He exists) unless through something else. Since they suffer from some limitations of method or that of provisional certainty they cannot pass through the position of contingent things or that of His existence as a description -rather than His self-subsisting existence- this type of arguments fail to prove His eternal necessity and at last His simple whetherness. However, the Proof of the Truthfuls comes free from those five limitations.    Ibn Sina has suggested the first account of the Truthfuls Proof which Mulla Sadra holds does not meet the required standard. Mulla Sadra has suggested a different account of such a proof by which we come to know the existence of Allah through Allah Himself. Allamah Tabatabaei has proposed another account of such a proof in which no classification into the rich and the poor is mentioned, and still it proves the self-subsisting existence of Allah through the modality of eternal necessity (which is far above essential necessity) .