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bukhari:3174Yaḥyá b. Bukayr > al-Layth > Yūnus > Ibn Shihāb > ʿUbaydullāh b. ʿAbdullāh b. ʿUtbah > ʿAbdullāh b. ʿAbbās > Abū Sufyān b. Ḥarb

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 Messenger of Allah ﷺ had concluded with Abu Sufyan and the Quraish infidels.  

البخاري:٣١٧٤حَدَّثَنَا 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 ﷺ أَبَا سُفْيَانَ فِي كُفَّارِ قُرَيْشٍ