Sahih Muslim #26 · Introduction

Sahih MuslimAbū Ja’far Muhammad bin us-Sabbāh narrated to us
Sahih Muslim · Introduction
Sahih Muslim · مقدمة
‘They would not ask about the chains of narration, and when the Fitnah occurred, they said: ‘Name for us your men’. So Ahl us-Sunnah would be regarded, and their Ḥadīth were then taken, and Ahl ul-Bi’dah would be regarded, and their Ḥadīth were not taken’.
حَدَّثَنَا أَبُو جَعْفَرٍ، مُحَمَّدُ بْنُ الصَّبَّاحِ حَدَّثَنَا إِسْمَاعِيلُ بْنُ زَكَرِيَّاءَ، عَنْ عَاصِمٍ الأَحْوَلِ، عَنِ ابْنِ سِيرِينَ، قَالَ لَمْ يَكُونُوا يَسْأَلُونَ عَنِ الإِسْنَادِ، فَلَمَّا وَقَعَتِ الْفِتْنَةُ قَالُوا سَمُّوا لَنَا رِجَالَكُمْ فَيُنْظَرُ إِلَى أَهْلِ السُّنَّةِ فَيُؤْخَذُ حَدِيثُهُمْ وَيُنْظَرُ إِلَى أَهْلِ الْبِدَعِ فَلاَ يُؤْخَذُ حَدِيثُهُمْ ‏.‏
Reference : Sahih Muslim 26