"Go and judge between the people." So he said: "Perhaps you can excuse me (from that) O Commander of the Believers!" He said: "Why do you have an aversion for that when your father judged?" He said: "I heard the Messenger of Allah saying: 'Whoever was a judge and judged with justice, it still would have been better for him to have turned away from it completely.' What do I want after that?'" (Daif).
Jami` at-Tirmidhi Book 15, Hadith 1