Numbers 5:1-4

Then the Lord spoke to Moses, saying,

“Command the sons of Israel that they send away from the camp everyone with leprosy, everyone having a discharge, and everyone who is unclean because of contact with a dead person.

You shall send away both male and female; you shall send them outside the camp so that they do not defile their camp where I dwell in their midst.”

And the sons of Israel did so and sent them outside the camp; just as the Lord had spoken to Moses, that is what the sons of Israel did.