وَعَنْ عَرْفَجَةَ بْنِ شُرَيْحٍ
سَمِعْتُ رَسُولَ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ: «مَنْ أَتَاكُمْ وَأَمَرَكُمْ جَمِيعٌ، يُرِيدُ أَنْ يُفَرِّقَ جَمَاعَتَكُمْ، فَاقْتُلُوهُ»
‘I heard the Messenger of Allah (sallallahu alayhi wa sallam) say, ‘He who comes to you when you are united and wants to disunite your community, kill him.’ Related by Muslim.’
Bulugh al-Maram 1384, Book 9, Crimes (Qisas or Retaliation), Hadith 40. 1 min read