Leviticus 13:46

13:46 The whole time he has the infection he will be continually unclean. He must live in isolation, and his place of residence must be outside the camp.

Numbers 5:2-4

5:2 “Command the Israelites to expel from the camp every leper, everyone who has a discharge, and whoever becomes defiled by a corpse. 5:3 You must expel both men and women; you must put them outside the camp, so that they will not defile their camps, among which I live.” 5:4 So the Israelites did so, and expelled them outside the camp. As the Lord had spoken to Moses, so the Israelites did.

Numbers 15:35

15:35 Then the Lord said to Moses, “The man must surely be put to death; the whole community must stone him with stones outside the camp.”