Mukhtasar Muslim

Sayyiduna Abu Dharr (may Allah be pleased with him) says: I said, "O Messenger of Allah! Will you not appoint me as a governor (etc.)?" The Messenger of Allah (peace and blessings be upon him) placed his blessed hand on my shoulder and said, "O Abu Dharr! You are weak, and this is a trust (meaning, the ruler must fulfill both the rights of the people and the rights of Allah Almighty), and on the Day of Resurrection, this position will bring nothing but disgrace and regret, except for the one who fulfills its rights and carries out his duties with truthfulness."