The nazarite must let his hair grow

'All the days of his vow of separation no razor shall pass over his head. He shall be holy until the days are fulfilled for which he separated himself to the LORD; he shall let the locks of hair on his head grow long.

Hebrew

ה כָּל-יְמֵי נֶדֶר נִזְרוֹ, תַּעַר לֹא-יַעֲבֹר עַל-רֹאשׁוֹ: עַד-מְלֹאת הַיָּמִם אֲשֶׁר-יַזִּיר לַיהוָה, קָדֹשׁ יִהְיֶה--גַּדֵּל פֶּרַע, שְׂעַר רֹאשׁוֹ.

Greek

5 πάσας τὰς ἡμέρας τῆς εὐχῆς τοῦ ἁγνισμοῦ ξυρὸν οὐκ ἐπελεύσεται ἐπὶ τὴν κεφαλὴν αὐτοῦ· ἕως ἂν πληρωθῶσιν αἱ ἡμέραι, ὅσας ηὔξατο κυρίῳ, ἅγιος ἔσται τρέφων κόμην τρίχα κεφαλῆς.

• Parashah: Naso
• Sefer HaChinuch: 374
• Mishneh Torah: Promises — Nazarite

• Numbers 6:5

Enumeration and classification from BibleData. The Greek is the Septuagint reading of the same verse, carried by the source for comparison.