SELF CONTROL H 651 "The person who is strong is not the one who knocks others out fighting; the one who is strong is he who controls himself when he is angry." R 651 Bukhari and Muslim with a chain up to Abu Hurairah who related that the Prophet, praise and peace be upon him, said this.
646- وعن أَبي هريرة رضي الله عنه : أنَّ رسول الله صلى الله عليه وآله وسلم ، قَالَ : "لَيْسَ الشَّديدُ بِالصُّرَعَةِ ، إنَّمَا الشَّدِيدُ الَّذِي يَمْلِكُ نَفْسَهُ عِنْدَ الْغَضَبِ" متفقٌ عَلَيْهِ .