Leviticus 19:35-37 KJV
Ye shall do t no unrighteousness in judgment, in meteyard, in weight, or in measure. [36] Just balances, just weights, a just ephah, and a just hin, shall ye have: I am the Lord your God, which brought you out of the land of Egypt. [37] Therefore shall ye observe all my statutes, and all my judgments, and do them: I am the LORD.