(29) باب " لاَ تَرْجِعُوا بَعْدِي كُفَّارًا يَضْرِبُ بَعْضُكمْ رِقَابَ بَعْضٍ "
Abdullah b. Mu'adh narrated from the Apostle (may peace and blessings be upon him) a hadith like this on the authority on Ibn Umar.
Reference: Sahih Muslim 66 a
In-book reference: Book 1, Hadith 130
USC-MSA web (English) reference(deprecated numbering scheme): Book 1, Hadith 125