Deuteronomy 25:13-16

13Do not try to cheat people when you weigh or measure things. Do not carry with you two different stone weights, one light one and one heavy one.

14Do not keep in your house two different bowls to measure things, one big one and one small one.

15You must keep true and honest weights. You must have bowls that measure things correctly. If you do that you will live for a long time in the land that the Lord your God is giving to you.

16The Lord your God hates anyone who cheats other people and is not honest.