The Continuity of the Divine Testament Since the Time of Adam عليه السلام

Narrated to us my father رضي الله عنه: Narrated to us Ahmad bin Idrees: Narrated to us Ahmad bin Muhammad bin Isa from Ahmad bin Muhammad bin Abi Nasr from Hammad bin Uthman from Abdullah bin Abi Yafur that he asked Aba Abdillah عليه السلام: “Can the earth remain without an Imam?” He replied: “No.” Then he was asked, “Can there be two Imams at one and the same time?” “No,” he replied, “Except that one of them is silent (and he does not announce his Imamate).”