Numbers 5:1

“Command the children of Israel that they put out of the camp every leper, everyone who has a discharge, and whoever is unclean by a corpse.

You shall put both male and female outside of the camp so that they don’t defile their camp, in the midst of which I dwell.”

The children of Israel did so, and put them outside of the camp; as the LORD spoke to Moses, so the children of Israel did.