Prophet Muhammad (sallallahu alaihi wa sallam) part 30 :

Prophet Muhammad (sallallahu alaihi wa sallam) part 30 :

A) Prophet Muhammad (ﷺ) dispatches representatives :

About this time it was revealed to the Prophet (ﷺ) that his mission should be universal. He (ﷺ) dispatched several representatives to invite the neighboring self ruling governing states to Islam. The embassy to the king of Persia, Chosroes Parvis, was received with disrespect and abusively. He was proudly amazed at the boldness of the Mecca refugee in addressing him on terms of equality. He was so enraged that he tore up into pieces the Prophet's (ﷺ) letter of invitation to Islam and dismissed the envoy from his presence with great contempt. When the Prophet (ﷺ) received information on this treatment, he calmly observed: "Thus will the Empire of Chosroes be torn to pieces."

B) Heraclius submits to Almighty God and embraces Islam :

The embassy to Heraclitus, the Emperor of the Romans, was received much more politely and respectfully. He treated the ambassador with great respect and sent the Prophet (ﷺ) a gracious reply to his message. Another envoy was sent to an Arab prince of the Ghassanite tribe, a Christian feudatory of Heraclius. This prince, instead of receiving the envoy with any respect, cruelly murdered him. This act caused great distress among the Muslims, who considered it as an outrage of international obligations.

Narrated Abdullah Ibn Abbas: Abu Sufyan Ibn 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 a peace with Abu Sufyan and Quraish nonbelievers. 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 among 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) (ﷺ) and if I told a lie they (my companions) should contradict me. By Allah! Had I not been afraid of my companions labeling me a liar, I would have not have spoken the truth about the Prophet (ﷺ)." Abu Sufyan's narration continues:"The first question he asked me about him was;
What is his family status among you?"
"I replied: "He belongs to a good noble family amongst us."

Heraclius further asked: "Has anybody among you ever claimed the same (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 (ﷺ)?"
I replied: "It is the poor who follow him."

He said: "Are his followers increasing or 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 (ﷺ) of telling lies before his claim (to be a Prophet)?"
I replied: "No."

Heraclius said: "Does he (ﷺ) break his promises?"
I replied: "No. We are at peace 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 war with him (ﷺ)?"
I replied: "Yes."

Then he said: "What was the outcome of the battles?"
I replied: "Sometimes he (ﷺ) was victorious and sometimes we."

Heraclius said: "What does he order you to do?"I said: "He (ﷺ) tells us to worship Allah and Allah alone and not to worship anything along with Him, and to renounce all that our ancestors had said. He (ﷺ) orders us to pray, to speak the truth, to be chaste and to keep good relations with our kith and kin(Relatives)."

In sha Allah,will be continued. {Ref : Stories of prophets by Ibn Kathir(rahimahullah)}