Abu Sufyan narrated to me personally, saying, "I set out during the Truce that had been concluded between me and Allah's Apostle. While I was in Sham, a letter sent by the Prophet was brought to Heraclius. Dihya Al-Kalbi had brought and given it to the governor of Busra, and the latter forwarded it to Heraclius. Heraclius said, 'Is there anyone from the people of this man who claims to be a prophet?' The people replied, 'Yes.' So I along with some of Quraishi men were called and we entered upon Heraclius, and we were seated in front of him. Then he said, 'Who amongst you is the nearest relative to the man who claims to be a prophet?' So they made me sit in front of him and made my companions sit behind me. Then he called upon his translator and said (to him). 'Tell them ( i.e. Abu Sufyan's companions) that I am going to ask him (i.e. Abu Sufyan) regarding that man who claims to be a prophet. So, if he tell me a lie, they should contradict him (instantly).' By Allah, had I not been afraid that my companions would consider me a liar, I would have told lies. Heraclius then said to his translator, 'Ask him: What is his (i.e. the Prophet's) family status amongst you? I said, 'He belongs to a noble family amongst us." Heraclius said, 'Was any of his ancestors a king?' I said, 'No.' He said, 'Did you ever accuse him of telling lies before his saying what he has said?' I said, 'No.' He said, 'Do the nobles follow him or the poor people?' I said, 'It is the poor who followed him.' He said, 'Is the number of his follower increasing or decreasing?' I said, 'The are increasing.' He said, 'Does anyone renounce his religion (i.e. Islam) after embracing it, being displeased with it?' I said, 'No.' He said, 'Did you fight with him?' I replied, 'Yes.' He said, 'How was your fighting with him?' I said, 'The fighting between us was undecided and victory was shared by him and us by turns. He inflicts casualties upon us and we inflict casualties upon him.' He said, 'Did he ever betray?' I said, 'No, but now we are away from him in this truce and we do not know what he will do in it" Abu Sufyan added, "By Allah, I was not able to insert in my speech a word (against him) except that. Heraclius said, 'Did anybody else (amongst you) ever claimed the same (i.e. Islam) before him? I said, 'No.' Then Heraclius told his translator to tell me (i.e. Abu Sufyan), 'I asked you about his family status amongst you, and you told me that ...

Allah's Apostle wrote to Caesar and invited him to Islam and sent him his letter with Dihya Al-Kalbi whom Allah's Apostle ordered to hand it over to the Governor of Busra who would forward it to Caesar. Caesar as a sign of gratitude to Allah, had walked from Hims to Ilya (i.e. Jerusalem) when Allah had granted Him victory over the Persian forces. So, when the letter of Allah's Apostle reached Caesar, he said after reading it, 'Seek for me any one of his people! (Arabs of Quraish tribe) if present here, in order to ask him about Allah's Apostle. At that time Abu Sufyan bin Harb was in Sham with some men from Quraish who had come (to Sham) as merchants during the truce that had been concluded between Allah's Apostle; and the infidels of Quraish. Abu Sufyan said, Caesar's messenger found us somewhere in Sham so he took me and my companions to Ilya and we were admitted into Ceasar's court to find him sitting in his royal court wearing a crown and surrounded by the senior dignitaries of the Byzantine. He said to his translator. 'Ask them who amongst them is a close relation to the man who claims to be a prophet." Abu Sufyan added, "I replied, 'I am the nearest relative to him.' He asked, 'What degree of relationship do you have with him?' I replied, 'He is my cousin,' and there was none of Bani Abu Manaf in the caravan except myself. Caesar said, 'Let him come nearer.' He then ordered that my companions stand behind me near my shoulder and said to his translator, 'Tell his companions that I am going to ask this man about the man who claims to be a prophet. If he tells a lie, they should contradict him immediately." Abu Sufyan added, "By Allah! Had it not been shameful that my companions label me a liar, I would not have spoken the truth about him when he asked me. But I considered it shameful to be called a liar by my companions. So I told the truth. He then said to his translator, 'Ask him what kind of family does he belong to.' I replied, 'He belongs to a noble family amongst us.' He said, 'Have anybody else amongst you ever claimed the same before him? 'I replied, 'No.' He said, 'Had you ever blamed him for telling lies before he claimed what he claimed? ' I replied, 'No.' He said, 'Was anybody amongst his ancestors a king?' I replied, 'No.' He said, "Do the noble or the poor follow him?' I replied, 'It is the poor who follow him.' He said, 'Are they increasing or decreasing (day by day)?' I replied,' ...