Abdullah ibn Mas’ud reported: The Messenger of Allah, peace and blessings be upon him, said, “Whom do you consider to be a fighter among you?” We said, “One whom men cannot wrestle down.” The Prophet said, “It is not so. Rather, it is one who controls himself when angry.”
Source: Ṣaḥīḥ Muslim 2608
Grade: Sahih (authentic) according to Muslim
عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ مَا تَعُدُّونَ الصُّرَعَةَ فِيكُمْ قُلْنَا الَّذِي لَا يَصْرَعُهُ الرِّجَالُ قَالَ لَيْسَ بِذَلِكَ وَلَكِنَّهُ الَّذِي يَمْلِكُ نَفْسَهُ عِنْدَ الْغَضَبِ
2608 صحيح مسلم كتاب البر والصلة والآداب باب فضل من يملك نفسه عند الغضب وبأي شيء يذهب الغضب