Numbers 6:18
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.
Torrey's Topical Textbook—AKJV

Acts 18:18
And Paul after this tarried there yet a good while, and then took his leave of the brothers, and sailed there into Syria, and with him Priscilla and Aquila; having shorn his head in Cenchrea: for he had a vow.
Torrey's Topical Textbook—AKJV

Acts 21:24
Them take, and purify yourself with them, and be at charges with them, that they may shave their heads: and all may know that those things, whereof they were informed concerning you, are nothing; but that you yourself also walk orderly, and keep the law.
Torrey's Topical Textbook—AKJV