When the diplomatic letter of Caesar arrived at the court of Khosrow Parviz, tidings of a historic alliance echoed through the royal halls. Khosrow summoned the grandees of Iran, announcing that the turning heavens had cast a new light upon the world: Caesar had sent a profound message seeking to extinguish the ancient enmity between Rome and Iran. The Iranian nobles replied that though malice had long burned between the empires, if Khosrow could bring about true peace, his name would be inscribed upon royal crowns for eternity.
Seeing their approval, Khosrow cleared the assembly of strangers. He called for ink, pen, and Chinese silk, ordering the royal scribe to draft an epistle in the imperial Pahlavi script. Khosrow began by swearing an oath before Holy Yazdan that as long as he reigned, he would demand no tribute from Rome nor send armies across her borders. Every city and territory held by Iranian arms, regardless of its yield, would be restored to Caesar under sealed treaties.
Furthermore, Khosrow willingly accepted Caesar's noble and pure daughter in marriage. He requested that the Iranian nobles residing under Caesar's protection—Gustaham, Shapur, Andiyan, and Khorrad son of Barzin—be returned to Iran alongside the royal bride and her escort. By this match, the ancient ties of blood stretching back to Kyumars, Jamshid, the lineage of Iraj, the farr of Fereydun, and the renowned justice of Qobad the Great (under whose reign wolf and sheep drank together) would be renewed, uniting Romans and Iranians as one.
Sealing the parchment, Khosrow entrusted the letter to Khorrad son of Barzin. The chieftain mounted his bay steed like the swift wind and galloped until he reached Byzantium. Upon breaking the seal and reading Khosrow's definitive terms, Caesar convened the wisest counselors and most eloquent scholars of Rome to deliberate on the alliance. The Roman elders bowed low, declaring that Caesar was the sovereign ruler whose command was absolute, and that their very lives were at his service. Pleased with their loyalty, Caesar praised his lords and awaited the morning light to execute the historic compact.