You shall not shave around the sides of your head, nor shall you disfigure the edges of your beard.
Leviticus 19:27
Surrounding context
19:26 "You shall not eat anything with the blood, nor shall you practice divination or soothsaying.
19:27 You shall not shave around the sides of your head, nor shall you disfigure the edges of your beard.
19:28 You shall not make any cuttings in your flesh for the dead, nor tattoo any marks on you: I am the LORD.