Deuteronomy 25:13-18

13"You shall not have in your bag two kinds of weights, a large and a small.

14You shall not have in your house two kinds of measures, a large and a small.

15A full and fair weight you shall have, a full and fair measure you shall have, that your days may be long in the land that the Lord your God is giving you.

16For all who do such things, all who act dishonestly, are an abomination to the Lord your God.

17"Remember what Amalek did to you on the way as you came out of Egypt,

18how he attacked you on the way when you were faint and weary, and cut off your tail, those who were lagging behind you, and he did not fear God.