Leviticus 14:8-9 - The Seven Days Of Purification
8 Then the one who presents himself for cleansing shall wash his garments, and he shall shave off all his hair, and he shall wash himself in the water; thus he shall be clean, and afterward he shall enter the camp, but he shall stay {outside his tent} [for] seven days. 9 {And then} on the seventh day he must shave off all his hair--he must shave his head and his beard and {his eyebrows} and all [the rest] of his hair--and he shall wash his garments, and he shall wash his body in the water; thus he shall be clean.