ভূমিকা
O you who believe! obey Allah and obey the Apostle and those in authority (Ulil Amr) from among you; then if you quarrel about anything, refer it to Allah and the Apostle, if you believe in Allah and the last day; this is better and very good in the end.
Or do they envy the people for what Allah has given them of His grace? But indeed We have given to Ibrahim’s children the Book and the wisdom, and We have given them a grand kingdom. So of them is he who believes in him, and of them is he who turns away from him, and hell is sufficient to burn. (Sura Nisa 4:54-55) We should know that Commentators have differed in explaining Ulil Amr.
From the Ahle Sunnat commentators, some have said that they are chiefs and commanders of army and kings, and again some of them have also said that Ulil Amr means the learned of the Ummat. Imamite scholars are unanimous that they are the Imams of Aale Muhammad (a.s.). On the basis of narrations which will be mentioned henceforth Ulil Amr is one who has authority in affairs and there is no limit to this.
It means that he should possess authority in all the affairs of religion and the world and so he can be only the Imam.