Deuteronomy 19:16-19

If a malicious witness arises to accuse a person of wrongdoing, then both parties to the dispute shall appear before the LORD, before the priests and the judges who are in office in those days. The judges shall inquire diligently, and if the witness is a false witness and has accused his brother falsely, then you shall do to him as he had meant to do to his brother. So you shall purge the evil from your midst.