Sahih Muslim 1439
صحيح مسلم#1439Sahihحَدَّثَنَا ابْنُ أَبِي عُمَرَ، حَدَّثَنَا بِشْرُ بْنُ السَّرِيِّ، ح قَالَ وَحَدَّثَنَا ابْنُ خِرَاشٍ، حَدَّثَنَا عَمْرُو بْنُ عَاصِمٍ، قَالاَ جَمِيعًا حَدَّثَنَا هَمَّامٌ، بِهَذَا الإِسْنَادِ وَنَسَبَا أَبَا بَكْرٍ فَقَالاَ ابْنُ أَبِي مُوسَى .
This hadith has been narrated by the same chain of transmitters by Hammam, and said about Abu Bakr that he was Ibn Abu Musa
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:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 5:272