John Gill Commentary Leviticus 14:28

"and the priest shall put of the oil that is in his hand upon the tip of the right ear of him that is to be cleansed, and upon the thumb of his right hand, and upon the great toe of his right foot, upon the place of the blood of the trespass-offering:" — Leviticus 14:28 (ASV)

And the priest shall put of the oil that [is] in his hand ,
&c.] (See Gill on Leviticus 14:17).