Sahih Muslim 66
Sahih Muslim · Book 1: The Book of Faith · Clarifying the meaning of the Statement of the Prophet (saws): "Do not revert to disbelief (Kuffar) after I am Gone, striking one another's necks"
حَدَّثَنِي حَرْمَلَةُ بْنُ يَحْيَى ، أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ ، قَالَ حَدَّثَنِي عُمَرُ بْنُ مُحَمَّدٍ ، أَنَّ أَبَاهُ ، حَدَّثَهُ عَنِ ابْنِ عُمَرَ ، عَنِ النَّبِيِّ صلى الله عليه وسلم بِمِثْلِ حَدِيثِ شُعْبَةَ عَنْ وَاقِدٍ .
Harmala b. Yahya, Abdullah b. Wahb, Umar b. Muhammad, Ibn Umar narrated like the hadith reported by Shu'ba on the authority of Waqid.