Numbers 6:18

18 "The Nazirite is to shave his consecrated head at the entrance to the tent of meeting, take the hair from his head, and put [it] on the fire under the fellowship sacrifice.

Numbers 6:18 In-Context

16 "The priest is to present [these] before the Lord and sacrifice the Nazirite's sin offering and burnt offering.
17 He will also offer the ram as a fellowship sacrifice to the Lord, together with the basket of unleavened bread. Then the priest will offer the accompanying grain offering and drink offering.
18 "The Nazirite is to shave his consecrated head at the entrance to the tent of meeting, take the hair from his head, and put [it] on the fire under the fellowship sacrifice.
19 The priest is to take the boiled shoulder from the ram, one unleavened cake from the basket, and one unleavened wafer, and put [them] into the hands of the Nazirite after he has shaved his consecrated head.
20 The priest is to wave them as a presentation offering before the Lord. It is a holy portion for the priest, in addition to the breast of the presentation offering and the thigh of the contribution. After that, the Nazirite may drink wine.
Holman Christian Standard Bible ® Copyright © 2003, 2002, 2000, 1999 by Holman Bible Publishers.  Used by permission.  All rights reserved.