Do not return to unbelief after me by striking the necks of one another.  

لِيَ النَّبِيُّ ﷺ فِي حَجَّةِ الْوَدَاعِ اسْتَنْصِتِ النَّاسَ ثُمَّ قَالَ لاَ تَرْجِعُوا بَعْدِي كُفَّارًا يَضْرِبُ بَعْضُكُمْ 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.  

عَنِ النَّبِيِّ ﷺ بِمِثْلِهِ  

It is narrated on the authority of Abdullah b. Umar that the Apostle (may peace and blessings be upon him) observed on the occasion of the Farewell Pilgrimage Woe unto you distress unto you! Don't turn back as unbelievers after me by striking the necks of one another.  

عَنِ النَّبِيِّ ﷺ أَنَّهُ قَالَ فِي حَجَّةِ الْوَدَاعِ وَيْحَكُمْ أَوْ قَالَ وَيْلَكُمْ لاَ تَرْجِعُوا بَعْدِي كُفَّارًا يَضْرِبُ بَعْضُكُمْ رِقَابَ بَعْضٍ  

Harmala b. Yahya, Abdullah b. Wahb, Umar b. Muhammad, Ibn Umar narrated like the hadith reported by Shu'ba on the authority of Waqid.  

عَنِ النَّبِيِّ ﷺ بِمِثْلِ حَدِيثِ شُعْبَةَ عَنْ وَاقِدٍ