It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with him): I said: "O Messenger of Allah (peace and blessings be upon him)! Tell me something that is very brief, so that I may (remember and) understand it." the Messenger of Allah (peace and blessings be upon him) said: "Do not become angry." I repeated my request twice, but each time the Prophet (peace and blessings be upon him) gave me the same answer: "Do not become angry."
Hadith Referenceمسند أبي يعلى الموصلي / مسند عبد الله بن عمر / 5685
Hadith Takhrij«قال سعيد بن محمد السناري: صحيح» «أخرجه مسند أحمد برقم: 22627، وأخرجه إتحاف الخيرة المهرة بزوائد المسانيد العشرة برقم: 5322، مسند ابویعلیٰ ترقیم الاثری: 5659»