Authentic
hadith of Sahih Muslim
Sahih Muslim 2559b
حَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، وَابْنُ أَبِي عُمَرَ، وَعَمْرٌو النَّاقِدُ، جَمِيعًا عَنِ ابْنِ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، بِهَذَا الإِسْنَادِ وَزَادَ ابْنُ عُيَيْنَةَ " وَلاَ تَقَاطَعُوا " .
This hadith has been narrated on the authority of Zuhri with the same chain of transmitters with the addition of Ibn Uyaina (and the words are):
" Do not cut off (mutual relations)."
Reported by Muslim (No. 2559b, 2559a).