Musnad Ahmad 1018:48

Muhammad ibn Ja‘far narrated to us, Shu‘bah narrated to us, from Muhammad ibn Abi Ya‘qub, who said: I heard Shaqiq ibn Hayyan narrating from Mas‘ud ibn Qabisah, or Qabisah ibn Mas‘ud, who said: This tribe of Muharib prayed the morning prayer. When they had prayed, a young man among them said: I heard the Messenger of Allah (may Allah bless him and grant him peace) saying: "Indeed, the easts of the earth and its wests will be opened for you, and its workers will be in the Fire, except for the one who feared Allah and fulfilled the trust."