During this time Moses also wrote down the Torah, although the angels found it strange that God should have given him the commission to write down the Torah, and gave expression to their astonishment in the following words, that they addressed to God: "How is it that Thou givest Moses permission to write, so that he may write whatever he will, and say to Israel, 'I gave you the Torah, I myself wrote it, and then gave it to you?'" But God answered: "Far be it from Moses to do such a thing, he is a faithful servant!"
The Angels Questioned Whether Moses Would Claim the Torah
Legends of the Jews 2:134