We gathered before Abu Muhammad Hasan Ibn Ali (a.s) to ask him about the Hujjah (Imam) after him. There were forty men in the gathering. Uthman bin Saeed bin Amr Amari rose and said: “O son of Allah’s Messenger, I want to ask you about a great subject, which you know better than me.” “Sit down, O Uthman.” Uthman rose to leave. The Imam said: “No one leaves.” None of us left. It was an hour that Imam called Uthman. Uthman rose on his feet. The Imam said: “Shall I inform you why you have come?” They said: “Yes, O son of Allah’s Messenger.” He said: “You came to ask me about the Divine Proof (Hujjah) after me.” They said: “Yes.” Suddenly, there came a boy, as he were a piece of the moon and more similar to Imam Hasan Askari (a.s) than all the people. The Imam said: ‘This is your Imam after me and my caliph over you. Obey him and do not disperse after me, lest you will perish in your religion. Behold, you will not see him after this day until ages pass. So, accept from Uthman what he says and obey his order and accept his word, because he is the caliph of your Imam and the affairs are in his hands.”