Leviticus 13

45 As for the leper in whom [is] the plague, his garments are torn, and his head is uncovered, and he covers over the upper lip, and he calls, Unclean! Unclean! 46 He is unclean all the days that the plague [is] in him; he [is] unclean. He dwells alone; his dwelling [is] at the outside of the camp.