لَيْسَ الشَّدِيدُ بِالصُّرَعَةِ، إِنَّمَا الشَّدِيدُ الَّذِي يَمْلِكُ نَفْسَهُ عِنْدَ الْغَضَبِ
Transliteration
Laysa-sh-shadidu bi-s-sura'ah, innama-sh-shadidu-lladhi yamliku nafsahu 'inda-l-ghadab.
Translation
The strong one is not the one who overpowers others in wrestling. The strong one is the one who controls himself when angry.
Narrated by Abu Hurayrah·Sahih al-Bukhari 6114, Sahih Muslim 2609
