I heard Abu Abdullah as-Sadiq (as) saying: “The master of this matter has a likeness to Prophet Joseph (as).” I said: “As if you want to tell us about a disappearance or confusion!” He said: “Why do this damned people, who are like the pigs, deny this matter (the disappearance of imam al-Mahdi)? The brothers of Prophet Joseph (as) were skilled, intelligent and sons of prophets. When they came to him, they talked and dealt with him and although they were his brothers they could not know him until he himself told them that he was their brother Joseph. Then why do this umma deny that Allah may want to hide His authority from people for a certain time? Prophet Joseph (as) was the king of Egypt and there was between him and his father a distance of eighteen days-travel. If he wanted to inform his father of his place, he could do that. By Allah, Jacob (as) and his sons, after having heard the news of Joseph, traveled from their village to Egypt within nine days. So why do this umma deny that Allah may do for his authority (al-Mahdi) as He has done for Prophet Joseph (as)? Perhaps the master of this matter (al-Qa’im), who has been wronged and whose right has been denied, goes and comes among people frequently, walks in their markets and sits on their mats but they do not know him until the will of Allah permits him to introduce himself to them as Allah has permitted Prophet Joseph (as) to introduce himself to his brothers by saying: (They said: Are you indeed Yousuf? He said: I am Yousuf). The same was narrated by Muhammad bin Ya’qoob al-Kulayni from Ali bin Ibraheem bin Hashim from Muhammad bin al-Husayn from ibn Abu Najran from Fudhala bin Ayyoob from Sadeer as-Sayrafi from Abu Abdullah as-Sadiq (as).