Numbers 5:3-7

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.

Then the Lord spoke to Moses, saying,

“Speak to the sons of Israel: ‘When a man or woman commits any of the sins of mankind, acting unfaithfully against the Lord, and that person is guilty,

then he shall confess his sin which he has committed, and he shall make restitution in full for his wrong and add to it a fifth of it, and give it to him whom he has wronged.