Maybe, but again, I don’t have the text that I read...memory is flawed.
But I believe I am remembering the description of the letter correctly.
Remember, before the rise of the Roman Empire, the Persian Empire ruled a huge piece of the world. Their Empire included hundreds if not thousands of languages.
“Their Empire included hundreds if not thousands of languages.”
And Arabic was not really one of them. Certainly the chances of an untrained (and supposedly unlettered) Arab from SOUTHERN Arabia becoming a Persian general in the 7th century BEFORE the Muslim Arab invasion of Persia is ZERO.
St. John of Damascus, for instance, makes it clear that Muhammad was an ARAB and that he was from Arabia and developed his history there borrowing from Arianism. It’s doubtful that there were any Arians in Persia or Syria in the 7th century.
http://orthodoxinfo.com/general/stjohn_islam.aspx