"They shall neither shave their heads, nor let their hair grow long, but they shall keep their hair well trimmed.
Ezekiel 44:20
Surrounding context
44:19 When they go out to the outer court, to the outer court to the people, they shall take off their garments in which they have ministered, leave them in the holy chambers, and put on other garments; and in their holy garments they shall not sanctify the people.
44:20 "They shall neither shave their heads, nor let their hair grow long, but they shall keep their hair well trimmed.
44:21 No priest shall drink wine when he enters the inner court.