وَحَدَّثَنِي عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا يُونُسُ بْنُ أَبِي يَعْفُورٍ، عَنْ أَبِيهِ، عَنْ عَرْفَجَةَ، قَالَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ ‏"‏ مَنْ أَتَاكُمْ وَأَمْرُكُمْ جَمِيعٌ عَلَى رَجُلٍ وَاحِدٍ يُرِيدُ أَنْ يَشُقَّ عَصَاكُمْ أَوْ يُفَرِّقَ جَمَاعَتَكُمْ فَاقْتُلُوهُ ‏"‏ ‏.‏

It has been narrated (through a still different chain of transmitters) on the Same authority (i. e. 'Arfaja) who said similarly-but adding: " Kill all of them." I heard the Messenger of Allah (PBUH) say: When you are holding to one single man as your leader, you should kill who seeks to undermine your solidarity or disrupt your unity. Translation Not Available

Book Ref: Sahih Muslim Book 33 Hadith 4567
Web Ref:  Sahih Muslim Book 20 Hadith 1852 c