The Messenger of Allah ﷺ sent me to Yemen. I said, "Messenger of Allah, you are sending me to a people older than I am, and I am young with no insight into judging between people."He placed his hand on my chest and said, "O Allah, make his tongue firm and guide his heart. Ali, when two disputants sit before you, do not pass judgment between them until you have heard from the second just as you heard from the first. If you do that, the correct ruling will become clear to you."Ali said, "No judgment ever troubled me afterward," or, "No judgment was ever unclear to me afterward."
حدثنا أسود بن عامر حدثنا شريك عن سماك عن حنش
بعثني رسول الله ﷺ إلى اليمن قال فقلت يا رسول الله تبعثني إلى قوم أسن مني وأنا حديث لا أبصر القضاء قال فوضع يده على صدري وقال اللهم ثبت لسانه واهد قلبه يا علي إذا جلس إليك الخصمان فلا تقض بينهما حتى تسمع من الآخر كما سمعت من الأول فإنك إذا فعلت ذلك تبين لك القضاء قال فما اختلف علي قضاء بعد أو ما أشكل علي قضاء بعد