Moses
Leviticus 8:31ESV·traditional attribution

And Moses said to Aaron and his sons, “Boil the flesh at the entrance of the tent of meeting, and there eat it and the bread that is in the basket of ordination offerings, as I commanded, saying, ‘Aaron and his sons shall eat it.’

John Calvin Reformed @genevareformer

31. And Moses said unto Aaron and his sons, Boil the flesh This is the universal rule, as we have seen elsewhere. See ante, vol. 2, p. 133. One thing only is special, that God kept them in the tabernacle seven days, that they might learn to subordinate all their domestic cares and worldly business to their sacred duties. It has been elsewhere said, also, Ibid., p.26.

Matthew Henry Presbyterian @wholebiblehenry

Moses, having done his part of the ceremony, now leaves Aaron and his sons to do theirs. I. They must boil the flesh of their peace-offering, and eat it in the court of the tabernacle, and what remained they must burn with fire, Lev 8:31, Lev 8:32.

Commenting on Leviticus 8:31-36

John Gill Reformed Baptist @doctorgill

And Moses said unto Aaron, and to his sons,.... After he had offered the bullock, the two rams, and cakes of unleavened bread for the consecration of them: boil the flesh at the door of the tabernacle of the congregation; the remainder of the flesh of the ram of consecration, which was all but the fat, the shoulder, and the breast: and there eat it...