If Allah...
If Allah, the Exalted, had desired to let his father know his place, He could have done that. By Allah, Yaqub and his sons journeyed, when they were given the glad tidings, for nine days from the beginning of their journey until Egypt.
They said: Are you indeed Yusuf? He said: I am Yusuf and this is my brother…” (Surah Yusuf 12:89-90) 2- Ilalush Sharai: Shaykh Saduq has narrated from Muzaffar Alawi from Ibne Ayyashi and Haider bin Muhammad Samarqandi together from Ayyashi from Jibraeel bin Ahmad from Musa bin Ja’far Baghdadi from Hasan bin Muhammad Sairafi from Hannan bin Sudair from his father, Sudair that Imam Ja’far Sadiq (a.s.) said: “Our Qaim has an occultation the duration of which is lengthy.” I said: “Why is that so, O son of Allah’s Messenger?” He said: “Allah, the Exalted, disdains to have the traditions of the occultations of apostles not proceed in him.
O Sudair, he must complete the duration of their occultations. Allah, the Exalted, says: You shall surely enter a stage after another stage.
It means you will tread on the traditions of the nations before you.” 3- Amali Saduq: It is narrated from Ibne Mutawakkil from Ali from his father from Ibne Abi Umair that Imam Ja’far Sadiq (a.s.) recited the following about Imam Zamana (a.s.): For every nation is a rule which they await Our governance in the last period of time will come 4- Ikmaaluddin: It is narrated from Ibne Idris from his father from Ayyub bin Nuh from Muhammad bin Sinan from Safwan bin Mahran from Imam Ja’far Sadiq that he said: “Someone who professes faith in all Imams yet denies the Mahdi is like one who professes faith in all apostles yet denies the Prophethood of Muhammad (a.s.).” He was asked, “O son of Allah’s Messenger (a.s.) which one of your sons will the Mahdi be from?” He said: “He is the fifth from the sons of the seventh.
His person will be invisible to you and you will be prohibited from mentioning his name.” In that book the same report is quoted through another chain also.