Sahih al-Bukhari 6440
صحيح البخاري#6440Sahihوَقَالَ لَنَا أَبُو الْوَلِيدِ حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ ثَابِتٍ، عَنْ أَنَسٍ، عَنْ أُبَىٍّ، قَالَ كُنَّا نَرَى هَذَا مِنَ الْقُرْآنِ حَتَّى نَزَلَتْ {أَلْهَاكُمُ التَّكَاثُرُ}
Ubayy said (referring to the hadith above), "We considered this as a saying from the Qur'an till the Surah (beginning with):"The mutual rivalry (for piling up of worldly things) diverts you' (102:1) was revealed
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: 81:29