Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that a man came to the Messenger of Allah (peace and blessings be upon him). He said: O Messenger of Allah! Give me advice. He (peace and blessings be upon him) said: "Do not get angry." He (peace and blessings be upon him) repeated this same thing several times, but did not add anything to it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب آداب القاضي / 20279