Moses
Numbers 15:3BSB·traditional attribution

and you present a food offering to the LORD from the herd or flock to produce a pleasing aroma to the LORD—either a burnt offering or a sacrifice, for a special vow or freewill offering or appointed feast—

Matthew Henry Presbyterian @wholebiblehenry

Here we have, I. Full instructions given concerning the meat-offerings and drink-offerings, which were appendages to all the sacrifices of animals. The beginning of this law is very encouraging: When you come into the land of your habitation which I give unto you, they you shall do so and so, Num 15:2.

Commenting on Numbers 15:1-21

John Gill Reformed Baptist @doctorgill

And will make an offering by fire unto the Lord, a burnt offering,.... The first of these respects such offerings by fire, which were not wholly burnt, but part of them were eaten by the priests, Deu 18:1; and the latter such as were wholly burnt, unless the latter can be thought to be only an explanation of the former: or a sacrifice in performing...

Jamieson-Fausset-Brown Reformed @jfbcommentary

make an offering by fire unto the Lord, a burnt offering--It is evident that a peace offering is referred to because this term is frequently used in such a sense (Exo 18:12; Lev 17:5).