This is a copy of the original letter of Prophet Muhammad (p) sent to Heraclius, Emperor of Rome (Byzantium). In this letter the prophet invites the Emperor to accept God (Allah) and embrace Islam as his way of life.
In this video I give brief information about the letter, along with quotes and references. I also share information regarding it's authenticity.
I hope this is beneficial to you all. May Allah bless you, Amen.