Deuteronomy 25:13-16 - Honest Weights And Measures
13 Thou shall not have in thy bag diverse weights, a great and a small. 14 Thou shall not have in thy house diverse measures, a great and a small. 15 A perfect and just weight thou shall have, a perfect and just measure thou shall have, that thy days may be long in the land which LORD thy God gives thee. 16 For all who do such things, [even] all who do unrighteously, are an abomination to LORD thy God.