Juvayni (d. 1283) records that, during the Abbasid persecution carried out against Isma'il ibn Ja'far, Muhammad and his brother Ali were in hiding in Medina. Muhammad left Medina to escape Abbasid espionage and thereafter lived incognito, his whereabouts being known to only a few of his most responsible followers.
Juvayni (d. 1283) records that, during the Abbasid persecution of Isma'il ibn Ja'far, Muhammad and Ali were in hiding in Medina. Muhammad then left Medina to avoid being tracked by Abbasid spies and lived secretly, with only a few of his most devoted followers aware of his whereabouts.