Deuteronomy 25:13-16

Amplified Bible

¹³ “You shall not have in your bag inaccurate weights, a heavy and a light [so you can cheat others]. ¹⁴ You shall not have in your house inaccurate measures, a large and a small. ¹⁵ You shall have a perfect (full) and just weight, and a perfect and just measure, so that your days may be long in the land which the Lord your God gives you. ¹⁶ For everyone who does such things, everyone who acts unjustly [without personal integrity] is utterly repulsive to the Lord your God.