The Holy Prophet's (sa) Great Trust in him
Hazrat Ali (ra) relates that the Holy Prophet (sa) said, “If I was to ever appoint someone as a governor without consultation it would be Abdullah bin Mas‘ud.”
(Usdul Ghaba, Vol. 3, p. 385, Dar-ul-Kutub al-ilmiyyah, Beirut)
Then, the same narration of Hazrat Ali (ra) has been recorded in the following manner in Al-Tabqaat-ul-Kubra wherein Hazrat Ali (ra) relates, “The Holy Prophet (sa) told me that if he was to appoint an Amir without the consultation of the Muslims, he would appoint Abdullah bin Mas‘ud as an Amir.” Hazrat Abdullah bin Mas‘ud relates that after embracing Islam he never slept beyond the period of chasht [between sunrise and noon].
(Al-Tabqaat-ul-Kubra, Vol. 3, p. 114, Dar-ul-Kutb al-ilimiyya, Beirut, 1990).