Sayyiduna Ali (may Allah be pleased with him) narrates that when the Prophet (peace and blessings be upon him) sent me to Yemen, I was young at that time. I said to the Prophet (peace and blessings be upon him), "I am young and I have absolutely no knowledge of passing judgments." The Prophet (peace and blessings be upon him) struck his hand on my chest and said: "Allah will guide your tongue to the right path and keep your heart firm. When two parties come to you, do not pass judgment in favor of one without hearing the other; in this way, it will be easy for you to judge." He says that after that, I continued to serve as a judge.