Musnad Ahmad 1018:121

Yahya ibn Adam narrated to us, Israel narrated to us, from Abu Ishaq, from Harithah ibn Mudarrib, from some of the companions of the Messenger of Allah, may Allah bless him and grant him peace, that the Messenger of Allah, may Allah bless him and grant him peace, said to his companions: "Indeed, among you are men to whom I do not give anything, I entrust them to their faith, among them is Furat ibn Hayyan," he said: from the tribe of Banu 'Ijl.