Moses
Leviticus 3:12ESV·traditional attribution

“If his offering is a goat, then he shall offer it before the LORD

Matthew Henry Presbyterian @wholebiblehenry

Directions are here given concerning the peace-offering, if it was a sheep or a goat. Turtle-doves or young pigeons, which might be brought for whole burnt offerings, were not allowed for peace-offerings, because they have no fat considerable enough to be burnt upon the altar; and they would be next to nothing if they were to be divided according to the law of the peace-offerings.

Commenting on Leviticus 3:6-17

John Gill Reformed Baptist @doctorgill

And he shall lay his hand upon the head of it,.... His right hand, according to the Targum of Jonathan, as before; the same directions are given for the killing of it, and for the sprinkling of its blood, as in the offerings of the bullock and lamb. And he shall lay his hand upon the head of it,....

Jamieson-Fausset-Brown Reformed @jfbcommentary

if his offering be a goat--Whether this or any of the other two animals were chosen, the same general directions were to be followed in the ceremony of offering.