H 396 - It is narrated from Imam Muhammad Baqir that the age of Imam Mahdi would not be more than forty years. He would be extremely strong, powerful and energetic. There are numerous traditional reports resembling this one, which differ in words as well as meaning.

H 397 - It is narrated from Muhammad bin Himam from Ja’far bin Muhammad bin Malik from Umar bin Tarqan from Muhammad bin Ismail from Ali bin Umar bin Ali bin Husain from Imam Ja’far Sadiq that he said: “Indeed the Master of the Age will be aged like Prophet Ibrahim ; (that is he lived to be a hundred and twenty years), but he will look like a thirty-year-old young man.”

H 398 - It is narrated from Muhammad bin Himam from Hasan bin Ali from Aquli from Hasan bin Ali bin Abu Hamza from his father from Abu Basir from Imam Ja’far Sadiq that he said: “When Imam Qaim reappears, people will refuse to believe in him and he will approach them as a young man. However, the believer from whom the Almighty Allah has taken a covenant in Aalame Zar (in the initial stage of creation) will believe immediately.”

H 399 - It is mentioned in another report that: There is a similarity between Prophet Yunus and Imam Mahdi ; and it is that he would return from his occultation as a young man.

H 400- It is narrated from Imam Ja’far Sadiq that he said: Do not deny that Almighty Allah has prolonged the lifespan of the Master of this affair, because Allah, the Mighty and the High has prolonged the life of Prophet Nuh before.

H 401 - Christians have narrated: Some of their ancestors lived for seven hundred years and some even exceeded this.

H 402 - It is narrated that Abu Ubaidah Moammar bin Muthanna Basri Teemi said: It was the quality of Bani Ghitfan that it was the most famous of the Arab tribes. Among its members was Nasr bin Dahman who was considered to be an elder and noble person of his tribe. He lived for 190 years and became extremely aged and weak, but after this period, his youth returned and his hair became black and no wonder was seen in Arabs like him.

Reports, which mention that the Imam of the Age will pass away or would be martyred and after that he would become alive again:

H 403 - It is narrated from Fadhl bin Shazan from Musa bin Sadan from Abdullah bin Qasim Hadhrami from Abi Saeed Khurasani that he said: I asked Imam Ja’far Sadiq , “Why is he named as Qaim?” He said: “Because he will rise after his name dies. He will establish a mighty enterprise. He will rise up by the command of Allah, the Glorified.”

H 404 - It is narrated from Muhammad bin Abdullah bin Ja’far Himyari from his father from Yaqub bin Yazid from Ali bin Hakam, from Hammad bin Uthman from Abi Basir that he said: I heard Imam Muhammad Baqir say: “The similitude of our Order in the Divine Book is the similitude of the owner of the donkey; Allah made him die for a hundred a years and then raised him up again.”

H 405 - It is narrated by Himyari from his father from Ja’far bin Muhammad Kufi from Ishaq bin Muhammad from Qasim bin Rabi from Ali bin Khattab on the authority of the Muezzin of the red mosque: I asked Imam Ja’far Sadiq , “Is there in the Book of Allah a similitude for the Qaim?” He said: “Yes, the verse of the owner of the donkey, Allah made him die for a hundred years and then raised him up again.”

H 406 - It is narrated from Fadhal bin Shazan from Ibn Abi Najran from Muhammad bin Fuzail from Hammad Ibn Abdul Karim that Imam Ja’far Sadiq said: “When the Qaim rises, people will say, ‘How this can be? His bones have decayed a long time ago.”

H 407 - It is narrated from Fadhl bin Shazan from Abdullah bin Jabla from Salma bin Junah Jofi from Hazim bin Habib from Abu Abdullah Sadiq that he told Hazim bin Habib: “O Hazim, there will be two occultations for the master of this affair and he would reappear in the second of the two. And if someone comes to you and says that he has touched his grave, do not testify for him (accept him).”

H 408 - Muhammad bin Abdullah al-Himyari narrated from his father from Muhammad bin Isa from Sulaiman bin Dawood al-Minqari from Abi Basir that he said: I heard Abu Ja’far say: “For the owner of this affair (Imam Mahdi), there are (four) traditions from four prophets: a tradition from Moses, a tradition from Jesus, a tradition from Joseph, and a tradition from Muhammad ﷺ. As for the tradition from Moses, it is a feared anticipation. As for the tradition from Joseph, it is the occultation. As for the tradition from Jesus, it is said: he died, though he did not die. And as for the tradition from Muhammad ﷺ, it is the sword.”

H 409 - Fadhl bin Shazan has narrated from Ahmad bin Isa Alawi from his father from his grandfather that Amirul Momineen said: “The Master of this Affair is from my offspring. He is the one about whom it will be said: He has died, killed, perished, no rather gone to some unknown place.”