(40) باب تَرْجَمَةِ الْحُكَّامِ، وَهَلْ يَجُوزُ تُرْجُمَانٌ وَاحِدٌ
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.' "
Reference: Sahih al-Bukhari 7196
In-book reference: Book 93, Hadith 57
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 89, Hadith 304