(640) بَابُ الْغَضَبِ
Abu Hurayra reported that the Messenger of Allah, may Allah blesshim and grant him peace, said, "The person who is strong is not strongbecause he can knock people down. The person who is strong is the one whocontrols himself when he is angry."
Reference: Al-Adab Al-Mufrad 1317
In-book reference: Book 57, Hadith 1
English translation: Book 57, Hadith 1317