Deuteronomy 25:13-19

13You must not have in your bag different stone weights, a heavy and a light one.

14You must not have in your house different measuring containers, a large and a small one.

15You must have an accurate and correct stone weight and an accurate and correct measuring container, so that your life may be extended in the land the Lord your God is about to give you.

16For anyone who acts dishonestly in these ways is abhorrent to the Lord your God.

17Remember what the Amalekites did to you on your way from Egypt,

18how they met you along the way and cut off all your stragglers in the rear of the march when you were exhausted and tired; they were unafraid of God.

19So when the Lord your God gives you relief from all the enemies who surround you in the land he is giving you as an inheritance, you must wipe out the memory of the Amalekites from under heaven – do not forget!