Sunan Abi Dawud 675
سنن أبي داود#675Sahihحَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ، حَدَّثَنَا خَالِدٌ، عَنْ أَبِي مَعْشَرٍ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ، عَنِ النَّبِيِّ صلى الله عليه وسلم مِثْلَهُ . وَزَادَ " وَلاَ تَخْتَلِفُوا فَتَخْتَلِفَ قُلُوبُكُمْ وَإِيَّاكُمْ وَهَيْشَاتِ الأَسْوَاقِ " .
This tradition has also been transmitted by ‘Abd Allah (b. Mas’ud) through a different chain of narrators. This version adds:“Do not be irregular, so have your hearts irregular, and beware of tumult such as found in market”
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 2:285