It is possible to establish a rational proof of the Imamah...
It is possible to establish a rational proof of the Imamah of the concealed Imam (peace be upon him) with the exposition that appointment and specification of the Imam by Allah is grace, and grace is obligatory upon Allah. Therefore, Allah has appointed someone to Imamah after Imam Hasan al-‘Askari (peace be upon him), and that person will not be other than his son, since the incapacity and invalidity of the other claimants to Imamah has been established and at present, no one has such a claim.
Thus, either Allah has withheld grace to His servants during the period of concealment, which is opposed to Divine wisdom, or He has appointed an Imam out of grace, in which case the Imam is none other than the twelfth Imam. [^1]: al-Zam al-Nasib, Volume 1, Page 429 Previous…