The Book of Fighting [The Prohibition of Bloodshed]
37/6. Chapter:
Killing One Who Splits Away from the Jama'ah (Main Body of Muslims) and Mentioning the Di
Sunan an-Nasai
أَخْبَرَنَا مُحَمَّدُ بْنُ قُدَامَةَ، قَالَ حَدَّثَنَا جَرِيرٌ، عَنْ زَيْدِ بْنِ عَطَاءِ بْنِ السَّائِبِ، عَنْ زِيَادِ بْنِ عِلاَقَةَ، عَنْ أُسَامَةَ بْنِ شَرِيكٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " أَيُّمَا رَجُلٍ خَرَجَ يُفَرِّقُ بَيْنَ أُمَّتِي فَاضْرِبُوا عُنُقَهُ " .
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 4023In-book reference : Book 37, Hadith 58English translation : Vol. 5, Book 37, Hadith 4028