And the priest shall take some of the blood of the trespass offering, and the priest shall put it upon the tip of the right ear of him that is to be cleansed. The Mishna describes the ceremony as follows:??
The leper stands before the trespass offering, lays his hand upon it and kills it. Two priests catch up the blood one in a vessel, the other in his band. He who catches it up in the vessel goes and throws it on the side of the altar, and he who catches it in his hand goes and stands before the leper.
And the leper who had previously bathed in the court of the lepers, goes and stands in the gate of Nicanor. Rabbi Jehudah says he needs not bathe. He thrusts in his head, and the priest puts of the blood upon the tip of his ear; he thrusts in his hand, and he puts it upon the thumb of his hand; he thrusts in his foot, and he puts it upon the great toe of his foot" ('Negaim,' 14.
7, quoted by Edersheim, 'Temple Service,' Leviticus 18:1-30.). No doubt, the ear, the thumb, and the great toe are selected for the purpose of showing, as in the case of the consecration of the priest, that the senses and the active powers of the restored Israelite must be dedicated hence, forth to God.