What truth?
How much do you know of where he was spiritually in his last moments, or days, or weeks or months that you can personally speak for God?
This could also be said for Judas,
for Peter,
Pope Formosus,
Calvin,
Luther,
For John Wesley, Napolean,
Hitler, or even for Elsie.
What we CAN do, is look at the history of these individuals and see if it’s likely they changed their minds and hearts at death’s door.
All we know is what was said by him, his parents and the President who referred to him in his mussie name. I guess we can hope for a last-minute miracle but Islam does not provide a path to heaven, and of this, I am certain.