Leviticus Chapter 13

13:44-46
He is a leprous man, he is unclean: the priest shall pronounce him utterly unclean; his plague is in his head.
And the leper in whom the plague is, his clothes shall be rent, and his head bare, and he shall put a covering upon his upper lip, and shall cry, Unclean, unclean.
All the days wherein the plague shall dwell in him he shall be defiled; he is unclean: he shall dwell alone; without the camp shall his habitation be.