Odon Lafontaine has been researching the coins being dug up from that place just prior to the advent of Islam. Coins use words and iconography that relay messages of the rulers who minted them. Hard evidence of how they thought of themselves.
From my understanding the message is simple. That geographical area was looking for the Christ/Messiah to return soon like many do today. Centuries already past and the people were getting impatient. Along comes the Umayyad Caliph Abd al-Malik, who has a big taxation beef with Justinian. Separates from the Christianized Roman empire, denies the Trinity and has the influence and power to build the Dome of the Rock and make himself "the Muhammad" of God's kingdom on Earth.
The information is available on his website, what do you make of it?
https://thegreatsecretofislam.com/
From my understanding the message is simple. That geographical area was looking for the Christ/Messiah to return soon like many do today. Centuries already past and the people were getting impatient. Along comes the Umayyad Caliph Abd al-Malik, who has a big taxation beef with Justinian. Separates from the Christianized Roman empire, denies the Trinity and has the influence and power to build the Dome of the Rock and make himself "the Muhammad" of God's kingdom on Earth.
The information is available on his website, what do you make of it?
https://thegreatsecretofislam.com/