וַיְמַהֵ֖ר מֹשֶׁ֑ה וַיִּקֹּ֥ד אַ֖רְצָה וַיִּשְׁתָּֽחוּ׃
Da neigte Mose sich schnell zur Erde und bückte sich
Rashi on Exodus
וימהר משה, AND MOSES MADE HASTE — When Moses saw that the Shechinah passed by and heard the sound of the proclamation he immediately prostrated himself.
Sforno on Exodus
וימהר משה, by acting with speed, zest, the person prostrating himself lends additional meaning to his humility before G’d. Our sages in Berachot 14 describe Rav Sheshet’s manner of praying by saying: “that when he bent his knee he did so as does someone who uses a stick to beat something with.”
Rashbam on Exodus
וימהר משה, once he saw G’d pass and heard His voice, he immediately began to bow down.