Musnad Abu Ya'la al-Mawsili 62:2

Shayban ibn Farrukh narrated to us, Jarir ibn Hazim narrated to us, al-Hasan narrated to us, from Abd al-Rahman ibn Samurah, who said: The Messenger of Allah (may Allah bless him and grant him peace) said to me: "O Abd al-Rahman, do not ask for authority." And he mentioned the rest of the hadith.