Leviticus 14:17

And of the rest of the oil that is in his hand shall the priest put 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 blood of the trespass offering:

Cross-reference

In Leviticus 14:14, blood is applied to the same body parts; the oil in verse 17 is placed over that blood, completing the cleansing.

Leviticus 8:23 applies blood to Aaron's ear, thumb, and toe for consecration, directly mirroring the oil application on the same parts here.

Leviticus 8:30 uses oil and blood to consecrate priests, paralleling the leper's anointing with oil and blood for cleansing.

Exodus 29:20 applies blood to the same ear, thumb, and toe in priestly consecration, mirroring the oil application here.