Deuteronomy 16:18-20
Judges
18 Appoint judges and officials for each of your tribes in every town the LORD your God is giving you, and they shall judge the people fairly. 19 Do not pervert justice or show partiality. Do not accept a bribe, for a bribe blinds the eyes of the wise and twists the words of the innocent. 20 Follow justice and justice alone, so that you may live and possess the land the LORD your God is giving you.
Deuteronomy 19:14-20
14 Do not move your neighbor’s boundary stone set up by your predecessors in the inheritance you receive in the land the LORD your God is giving you to possess.
Witnesses
15 One witness is not enough to convict anyone accused of any crime or offense they may have committed. A matter must be established by the testimony of two or three witnesses.
16 If a malicious witness takes the stand to accuse someone of a crime, 17 the two people involved in the dispute must stand in the presence of the LORD before the priests and the judges who are in office at the time. 18 The judges must make a thorough investigation, and if the witness proves to be a liar, giving false testimony against a fellow Israelite, 19 then do to the false witness as that witness intended to do to the other party. You must purge the evil from among you. 20 The rest of the people will hear of this and be afraid, and never again will such an evil thing be done among you.
Deuteronomy 25:13-16
13 Do not have two differing weights in your bag—one heavy, one light. 14 Do not have two differing measures in your house—one large, one small. 15 You must have accurate and honest weights and measures, so that you may live long in the land the LORD your God is giving you. 16 For the LORD your God detests anyone who does these things, anyone who deals dishonestly.