Deuteronomy 25:13-16 - Honest Weights And Measures
13 "There shall not be {for your use} in your bag {two kinds of stone weights, a large one and a small one}. 14 There shall not be in your house {for your use} {two kinds of measures}. 15 [Rather] a full and honest weight shall be {for your use}; there shall be for you a full and honest {measure}, so that your days on the land that Yahweh your God [is] giving to you may be long. 16 For detestable to Yahweh your God [is] everyone who [is] doing such things, everyone who [is] acting dishonestly.