And the Nazarita shall shave... — The consignment of his hair to the sacrificial fire formed a solemn and suitable termination of the days of his separation to the Lord during the continuance of his Nazirite vow.
Related Commentaries of Numbers 6:18
Numbers 6:18
18 And the Nazarite shall shave the head of his separation at the door of the tabernacle of the congregation, and shall take the hair of the head of his separation, and put it in the fire which is under the sacrifice of the peace offerings.