Numbers 6:18-19

18“ ‘Then at the entrance to the tent of meeting, the Nazirite must shave off the hair that symbolizes their dedication. They are to take the hair and put it in the fire that is under the sacrifice of the fellowship offering. 19“ ‘After the Nazirite has shaved off the hair that symbolizes their dedication, the priest is to place in their hands a boiled shoulder of the ram, and one thick loaf and one thin loaf from the basket, both made without yeast.