عن أبي هريرة رضي الله عنه مرفوعاً: «ليس الشديد بالصُّرَعة، إنما الشديد الذي يملك نفسه عند الغضب».
[صحيح] - [متفق عليه]
المزيــد ...
Abu Hurayrah (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: "The strong man is not the one who can overpower others (in wrestling); rather, the strong man is the one who controls himself when he gets angry."
Sahih/Authentic. - [Al-Bukhari and Muslim]
True strength is not the strength of muscles and body. The strong person is not the one who always defeats strong people. Rather, a truly strong person is the one who overpowers himself when he is in a fit of rage, because this proves that he has the strength to exercise self-control and overcome the devil.