Sahih al-Bukhari 3526
صحيح البخاري#3526Sahihوَقَالَ لَنَا قَبِيصَةُ أَخْبَرَنَا سُفْيَانُ، عَنْ حَبِيبِ بْنِ أَبِي ثَابِتٍ، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ لَمَّا نَزَلَتْ {وَأَنْذِرْ عَشِيرَتَكَ الأَقْرَبِينَ} جَعَلَ النَّبِيُّ صلى الله عليه وسلم يَدْعُوهُمْ قَبَائِلَ قَبَائِلَ.
Narrated Ibn `Abbas: When the Verse:-- 'And warn your tribe of near kindred' (26.214). was revealed, the Prophet (ﷺ) started calling every tribe by its name
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: 61:36