Sahih al-Bukhari 774
صحيح البخاري#774Sahihحَدَّثَنَا مُسَدَّدٌ، قَالَ حَدَّثَنَا إِسْمَاعِيلُ، قَالَ حَدَّثَنَا أَيُّوبُ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ قَرَأَ النَّبِيُّ صلى الله عليه وسلم فِيمَا أُمِرَ، وَسَكَتَ فِيمَا أُمِرَ {وَمَا كَانَ رَبُّكَ نَسِيًّا} {لَقَدْ كَانَ لَكُمْ فِي رَسُولِ اللَّهِ أُسْوَةٌ حَسَنَةٌ}.
Narrated Ibn `Abbas:The Prophet (ﷺ) recited aloud in the prayers in which he was ordered to do so and quietly in the prayers in which he was ordered to do so. "And your Lord is not forgetful." "Verily there was a good example for you in the ways of the Prophet
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: 10:168