Narrated 'Abdullah bin 'Abbas:

Abu Sufyan bin Harb informed me that Heraclius had sent a messenger to him while he had been accompanying a caravan from Quraish. They were merchants doing business in Sham (Syria, Palestine, Lebanon and Jordan), at the time when Allah's Messenger (ﷺ) had truce with Abu Sufyan and Quraish infidels. So Abu Sufyan and his companions went to Heraclius at Ilya (Jerusalem). Heraclius called them in the court and he had all the senior Roman dignitaries around him. He called for his translator who, translating Heraclius's question said to them, "Who amongst you is closely related to that man who claims to be a Prophet?" Abu Sufyan replied, "I am the nearest relative to him (amongst the group)."

Heraclius said, "Bring him (Abu Sufyan) close to me and make his companions stand behind him." Abu Sufyan added, Heraclius told his translator to tell my companions that he wanted to put some questions to me regarding that man (The Prophet) and that if I told a lie they (my companions) should contradict me." Abu Sufyan added, "By Allah! Had I not been afraid of my companions labeling me a liar, I would not have spoken the truth about the Prophet. The first question he asked me about him was:

'What is his family status amongst you?'

I replied, 'He belongs to a good (noble) family amongst us.'

Heraclius further asked, 'Has anybody amongst you ever claimed the same (i.e. to be a Prophet) before him?'

I replied, 'No.'

He said, 'Was anybody amongst his ancestors a king?'

I replied, 'No.'

Heraclius asked, 'Do the nobles or the poor follow him?'

I replied, 'It is the poor who follow him.'

He said, 'Are his followers increasing decreasing (day by day)?'

I replied, 'They are increasing.'

He then asked, 'Does anybody amongst those who embrace his religion become displeased and renounce the religion afterwards?'

I replied, 'No.'

Heraclius said, 'Have you ever accused him of telling lies before his claim (to be a Prophet)?'

I replied, 'No. '

Heraclius said, 'Does he break his promises?'

I replied, 'No. We are at truce with him but we do not know what he will do in it.' I could not find opportunity to say anything against him except that.

Heraclius asked, 'Have you ever had a...