Chapter 49: The Book of the Etiquette of Judges
It was narrated that Abu Musa said: "Some people from among the Ash' aris came to me and said: 'Go with us to the Messenger of Allah [SAW], for we have something to ask him.' So I went with them, and they said: 'O Messenger of Allah, use us to do your work.'" Abu Musa said: "I apologized for what they said, and I told him that I did not know what they were going to ask. He believed me and excused me, and said: 'We do not appoint for our work anyone who asks for that.'"
Sunan an-Nasa'i 5382