I heard Messenger of Allah ﷺ as saying: One is not strong because of one's wrestling skillfully. They said: Messenger of Allah, then who is strong? He said: He who controls his anger when he is in a fit of rage. (Using translation from Muslim 2609b)
قَالَ رَسُولُ اللهِ ﷺ لَيْسَ الشَّدِيدُ بِالصُّرَعَةِ قَالُوا فَمَنِ الشَّدِيدُ يَا رَسُولَ اللهِ؟ قَالَ الَّذِي يَمْلِكُ نَفْسَهُ عِنْدَ الْغَضَبِ