“I found in the Nawadir (works) of Muhammad ibn Sinan narrated from ‘Abdallah ibn Sinan who has said that abu ‘Abdallah (a.s.) has said the following. “No, I swear by Allah, that He has no made anyone of His creatures the in charge except the Messenger of Allah and the Imams (a.s.). Allah, the Most Holy, the Most High, has said, “ We have sent down to you the Book with the truth, so that you may judge between the people by that which Allah has shown you (4:105) and it is continued to be valid and in full force with the executors of his will.”