'Ali b. Muhammad al-Samuri
|'Ali b. Muhammad al-Samuri|
|Full Name||Abu l-Hasan Ali b. Muhammad al-Samuri|
|Companion of||Imam al-Hasan al-'Askari (a) and Imam al-Mahdi (a)|
|Place(s) of Residence||Baghdad|
|Death/Martyrdom||Sha'ban 15, 329/May 15, 941|
Abu l-Ḥasan ʿAlī b. Muḥammad al-Samurī (Arabic: ابوالحَسَن عَلي بن محمد السَمُري) (d. 329/941 is the fourth and last of The Four Deputies of Imam al-Mahdi (a) serving for three years. He undertook the position after Husayn b. Ruh al-Nawbakhti. Major Occultation started after he passed away.
His correspondences with Imam al-Hasan al-'Askari (a) indicate that he was also a companion of this Imam (a). His deputyship was very short and no detailed reports are available about it. The pressure from the government was so severe that did not allow him to fulfill his mission in the Wikala network. The letter of Imam al-Mahdi (a) to Ali b. Muhammad that predicted his death and the beginning of Major Occultation is among the important events during his deputyship following which the Shi'a lost contact with Imam al-Mahdi (a) and the Major Occultation started.