Numbers 6:18-19

18The Nazirite shall shave his dedicated head at the doorway of the Tent of Meeting (tabernacle), and take the dedicated hair of his head and put it on the fire which is under the sacrifice of the peace offerings.

19The priest shall take the boiled shoulder of the ram, and one unleavened [ring-shaped] loaf out of the basket, and one unleavened flat cake and shall put them on the hands of the Nazirite after he has shaved his dedicated hair.