Abu Hurairah (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings of Allah be upon him) said: "A strong person is not the one who overpowers others in wrestling; rather, a strong person is the one who controls himself at the time of anger." Agreed upon.
Hadith Referenceمشكوة المصابيح / كتاب الآداب / 5105
Hadith Gradingالألبانی:مُتَّفَقٌ عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (6114) و مسلم (107/ 2609)»