(6) باب قَتْلِ مَنْ فَارَقَ الْجَمَاعَةَ وَذِكْرِ الاِخْتِلاَفِ عَلَى زِيَادِ بْنِ عِلاَقَةَ عَنْ عَرْفَجَةَ فِيهِ
It was narrated that Usamah bin Sharik said:
"The Messenger of Allah [SAW] said: 'Any man who goes out and tries to create division among my Ummah, strike his neck (kill him).'"
Reference: Sunan an-Nasa'i 4023
In-book reference: Book 37, Hadith 58
English translation: Vol. 5, Book 37, Hadith 4028