Moses
Leviticus 11:6ESV·traditional attribution

And the hare, because it chews the cud but does not part the hoof, is unclean to you.

Matthew Henry Presbyterian @wholebiblehenry

Now that Aaron was consecrated a high priest over the house of God, God spoke to him with Moses, and appointed them both as joint-commissioners to deliver his will to the people. He spoke both to Moses and to Aaron about this matter; for it was particularly required of the priests that they should put a difference between clean and unclean, and teach the people to do so.

Commenting on Leviticus 11:1-8

John Gill Reformed Baptist @doctorgill

And the hare, because he cheweth the cud,.... Or, "though he chews" it: but divideth not the hoof, he is unclean to you; and so not to be eaten; so Plutarch (q) says, that the Jews are said to abstain from the hare, disdaining it as a filthy and unclean animal, and yet was in the greatest esteem with the Romans of any four footed...

Jamieson-Fausset-Brown Reformed @jfbcommentary

the hare--Two species of hare must have been pointed at: the Sinai hare, the hare of the desert, small and generally brown; the other, the hare of Palestine and Syria, about the size and appearance of that known in our own country. Neither the hare nor the coney are really ruminating. They only appear to be so from working the jaws on the grasses they live on.