لَيْسَ الشَّدِيدُ بِالصُّرَعَةِ، إِنَّمَا الشَّدِيدُ الَّذِي يَمْلِكُ نَفْسَهُ عِنْدَ الْغَضَبِ
English
The strong man is not the one who overcomes people by his strength; the strong man is the one who controls himself when angry.
Narrated by Abu Hurayrah
لَيْسَ الشَّدِيدُ بِالصُّرَعَةِ، إِنَّمَا الشَّدِيدُ الَّذِي يَمْلِكُ نَفْسَهُ عِنْدَ الْغَضَبِ
English
The strong man is not the one who overcomes people by his strength; the strong man is the one who controls himself when angry.
Foundational in the literature of tazkiya; al-Ghazali builds an entire chapter of the Ihya' on it.