Sahih al-Bukhari 342
صحيح البخاري#342Sahihحَدَّثَنَا مُسْلِمٌ، حَدَّثَنَا شُعْبَةُ، عَنِ الْحَكَمِ، عَنْ ذَرٍّ، عَنِ ابْنِ عَبْدِ الرَّحْمَنِ، عَنْ عَبْدِ الرَّحْمَنِ، قَالَ شَهِدْتُ عُمَرَ فَقَالَ لَهُ عَمَّارٌ. وَسَاقَ الْحَدِيثَ.
Narrated `Ammar:As above
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 al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 7:9