Hazrat Ali (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) sent me to the people of Yemen as a judge so that I may decide among them. I said: O Messenger of Allah (peace and blessings be upon him)! I do not have any knowledge regarding making decisions. So the Noble Prophet (peace and blessings be upon him) placed his blessed hand on my chest and said: O Allah, grant guidance to his heart and make his tongue straight. Hazrat Ali (may Allah be pleased with him) says that since I have sat in that place, I have never had any doubt in making a decision between two people.