You cannot prove otherwise so your motive for hearsay does not exist. You don't have a motive.
He had the same motives as Mohammed had.
Moses had the same motive as Mohammad had? Moses was the meekest man to ever walk the earth!! Mohammad was full of pride and thin skinned - if anyone made the slightest insult against him his heart was filled with murder and wrath. He had a Jew murdered over a poem written about him! Moses? He was so focused on the LORD he seems to have not even noticed when others spoke against him! He had a heart full of mercy. There is simply no comparison.
Moses was a godly man, a prophet of the LORD and today he is in heaven. Mohammad was a wicked man, a false prophet and today he is in hell. That is not hearsay. That is a fact.