‘Abdallah b. ‘Amr reported God’s Messenger as saying, “If anyone swears allegiance to an imam, giving him his hand in ratification and sincere agreement in his heart, he must obey him if he can. Then if another comes and contends with him, cut off that other one’s head.” Muslim transmitted it.
Hadith Referenceمشكوة المصابيح / كتاب الإمارة والقضاء / 3679
Hadith Gradingالألبانی:صَحِيح | زبیر علی زئی:صحيح
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «رواه مسلم (1844/46)»