´It was narrated from Abu Bakrah that:` The Prophet [SAW] said: "Do not revert to misguidance after I am gone, striking the necks of one another (killing one another)."
Hadith Referenceسنن نسائي / كتاب تحريم الدم / 4135
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:إسناده صحيح