[Machine] The Messenger of Allah ﷺ said, "Whoever incites division among my Ummah, strike his neck." This was narrated by Zaid bin 'Ata bin As-Sa'ib from Ziyad bin 'Ilaqah from Usamah. The correct narration is from 'Arfajah, and that is also narrated by Muhammad bin Bashr from Mujalid.
قَالَ رَسُولُ اللهِ ﷺ «أَيُّمَا رَجُلٍ خَرَجَ يُفَرِّقُ بَيْنَ أُمَّتِي فَاضْرِبُوا عُنُقَهُ» هَكَذَا رَوَاهُ زَيْدُ بْنُ عَطَاءِ بْنِ السَّائِبِ عَنْ زِيَادِ بْنِ عِلَاقَةَ عَنْ أُسَامَةَ وَالصَّوَابُ عَنْ عَرْفَجَةَ وَكَذَلِكَ رَوَاهُ مُحَمَّدُ بْنُ بِشْرٍ عَنْ مُجَالِدٍ