Sahih al-Bukhari 3174
صحيح البخاري#3174Sahihحَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، حَدَّثَنَا اللَّيْثُ، عَنْ يُونُسَ، عَنِ ابْنِ شِهَابٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُتْبَةَ، أَخْبَرَهُ أَنَّ عَبْدَ اللَّهِ بْنَ عَبَّاسٍ أَخْبَرَهُ أَنَّ أَبَا سُفْيَانَ بْنَ حَرْبٍ أَخْبَرَهُ أَنَّ هِرَقْلَ أَرْسَلَ إِلَيْهِ فِي رَكْبٍ مِنْ قُرَيْشٍ كَانُوا تِجَارًا بِالشَّأْمِ فِي الْمُدَّةِ الَّتِي مَادَّ فِيهَا رَسُولُ اللَّهِ صلى الله عليه وسلم أَبَا سُفْيَانَ فِي كُفَّارِ قُرَيْشٍ.
Narrated ' `Abdullah bin `Abbas:That Abu Sufyan bin Harb Informed him that Heraclius called him and the members of a caravan from Quraish who had gone to Sham as traders, during the truce which Allah's Messenger (ﷺ) had concluded with Abu Sufyan and the Quraish infidels
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: 58:16