וַיֹּ֣אמֶר אֵלַ֗י בֶּן־אָדָם֙ בִּטְנְךָ֤ תַֽאֲכֵל֙ וּמֵעֶ֣יךָ תְמַלֵּ֔א אֵ֚ת הַמְּגִלָּ֣ה הַזֹּ֔את אֲשֶׁ֥ר אֲנִ֖י נֹתֵ֣ן אֵלֶ֑יךָ וָאֹ֣כְלָ֔ה וַתְּהִ֥י בְּפִ֖י כִּדְבַ֥שׁ לְמָתֽוֹק׃ (פ)
他對我說：「人子啊，要讓你的肚腹吃下，用我賜給你的這書卷充滿你的腸腹。」我就吃了，它在我口中甘甜如蜜。
Malbim
He remained there with Ad-noy. Moshe’s body ascended in spirituality until it was capable of surviving on the food of the soul. Thus according to Shemos Rabbah (48) he was nourished by the splendor of the Shechinah. The Ten [Commandments]. The first tablets were inscribed on both sides, containing all the laws of the Torah in all their details, both exoteric and esoteric. The second tablets, by contrast, contained only the Ten Commandments.