As for when it will happen...

5- Ikmaaluddin: It is narrated from Ibne Walid from Saffar from Ibne Yazid from Ayyub Ibne Nuh that: I said to Imam Reza (a.s.), “We hope that you will be the Patron of this Affair and that may Allah, the Exalted, confer this to you without use of violence.

You have been pledged allegiance to and coins have been minted on your name.” He said: “There is no one of us that letters come and go to him, is asked questions, pointed with fingers, and religious dues taken to, but he will be assassinated or he will die on his bed, until Allah, the Exalted, sends for this Order a man whose birth and place of growth will be hidden and he will not be hidden in his lineage.” 6- Ikmaaluddin: It is narrated from Attar from his father from Ashari from Muhammad bin Hamadan from his uncle, Ahmad bin Zakariya that: Imam Reza (a.s.) asked me, “Where is your house in Baghdad?” I said: “At Karkh.” He said: “That is the safest of places.

There has to happen the deaf catastrophic mischief in which every secret and close relation will be dropped. That will happen after the Shia will miss the third from my sons.” 7- Ghaibat Nomani: It is narrated from Muhammad bin Hamam from Abdullah bin Ja’far from Yaqtini from Muhammad bin Abi Yaqub Balkhi that: I heard Imam Reza (a.s.) say, “They will be tested through something that is severer and greater.

They will be tested with a fetus in the abdomen of his mother and the suckling baby, until it is said that he has disappeared and that he is dead. They will say, ‘There is no Imam.’ However, even the Messenger of Allah (s.a.w.s.) disappeared, and many others and many others disappeared.