It is narrated from Sayyiduna Jariyah bin Qudamah (may Allah be pleased with him) that he said: O Messenger of Allah, tell me something that will benefit me, and keep it brief so that I can understand it. He (peace and blessings be upon him) said: "Do not become angry." He repeated his request several times, and each time the Messenger of Allah (peace and blessings be upon him) said the same: "Do not become angry."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 2083