Sahih al-Bukhari 7196
Narrated `Abdullah bin `Abbas:
That Abu Sufyan bin Harb told him that Heraclius had called him along with the members of a 
Quraish caravan and then said to his interpreter, "Tell them that I want to ask this (Abu Sufyan) a 
question, and if he tries to tell me a lie, they should contradict him." Then Abu Sufyan mentioned the 
whole narration and said that Heraclius said to the inter Peter, "Say to him (Abu Sufyan), 'If what you 
say is true, then he (the Prophet) will take over the place underneath my two feet.' "
حَدَّثَنَا أَبُو الْيَمَانِ، أَخْبَرَنَا شُعَيْبٌ، عَنِ الزُّهْرِيِّ، أَخْبَرَنِي عُبَيْدُ اللَّهِ بْنُ عَبْدِ اللَّهِ، أَنَّ عَبْدَ اللَّهِ بْنَ عَبَّاسٍ، أَخْبَرَهُ أَنَّ أَبَا سُفْيَانَ بْنَ حَرْبٍ أَخْبَرَهُ أَنَّ هِرَقْلَ أَرْسَلَ إِلَيْهِ فِي رَكْبٍ مِنْ قُرَيْشٍ، ثُمَّ قَالَ لِتَرْجُمَانِهِ قُلْ لَهُمْ إِنِّي سَائِلٌ هَذَا، فَإِنْ كَذَبَنِي فَكَذِّبُوهُ‏.‏ فَذَكَرَ الْحَدِيثَ فَقَالَ لِلتَّرْجُمَانِ قُلْ لَهُ إِنْ كَانَ مَا تَقُولُ حَقًّا فَسَيَمْلِكُ مَوْضِعَ قَدَمَىَّ هَاتَيْنِ‏.‏