(6) باب قَتْلِ مَنْ فَارَقَ الْجَمَاعَةَ وَذِكْرِ الاِخْتِلاَفِ عَلَى زِيَادِ بْنِ عِلاَقَةَ عَنْ عَرْفَجَةَ فِيهِ
It was narrated that 'Arfajah bin Shuraih said:
"The Prophet [SAW] said: 'After me there will be many calamities and much evil behavior.' He raised his hands (and said): 'Whomever you see trying to create division among the Ummah of Muhammad [SAW] when they are all united, kill him, no matter who he is among the people.'"
Reference: Sunan an-Nasa'i 4021
In-book reference: Book 37, Hadith 56
English translation: Vol. 5, Book 37, Hadith 4026