Narrated Abu Huraira
Allah's Messenger (ﷺ) said, "The strong is not the one who overcomes the people by his strength, but the strong is the one who controls himself while in anger."
Narrated Sulaiman bin Sarad
Two men abused each other in front of the Prophet (ﷺ) while we were sitting with him. One of the two abused his companion furiously and his face became red. The Prophet (ﷺ) said, "I know a word (sentence) the saying of which will cause him to relax if this man says it. Only if he said, "I seek refuge with Allah from Satan, the outcast.' " So they said to that (furious) man, 'Don't you hear what the Prophet (ﷺ) is saying?" He said, "I am not mad."
Narrated Abu Huraira
A man said to the Prophet (ﷺ), "Advise me! "The Prophet (ﷺ) said, "Do not become angry and furious." The man asked (the same) again and again, and the Prophet (ﷺ) said in each case, "Do not become angry and furious."