Moses
Leviticus 14:18ESV·traditional attribution

And the rest of the oil that is in the priest’s hand he shall put on the head of him who is to be cleansed. Then the priest shall make atonement for him before the LORD.

Matthew Henry Presbyterian @wholebiblehenry

Observe, I. To complete the purification of the leper, on the eighth day, after the former solemnity performed without the camp, and, as it should seem, before he returned to his own habitation, he was to attend at the door of the tabernacle, and was there to be presented to the Lord, with his offering, Lev 14:11. Observe here, 1.

Commenting on Leviticus 14:10-20

John Gill Reformed Baptist @doctorgill

And the remnant of the oil that is in the priests hand,.... Either in the hand of the priest that makes the leper clean, or in the hand of a fellow priest; what was left of that after some of it had been sprinkled seven times before the Lord, and after other of it had been put upon the several parts of the leper, as...

Keil & Delitzsch Lutheran @keilanddelitzsch

Lev 14:15-18 The priest then poured some oil out of the log into the hollow of his left hand, and dipping the finger of his right hand in the oil, sprinkled it seven times before Jehovah, i.e., before the altar of burnt-offering, to consecrate the oil to God, and sanctify it for further use.

Commenting on Leviticus 14:15-18