"Unequal weights and unequal measures are both alike an abomination to the Lord." Proverbs 20:10
and
You shall not steal; you shall not deal falsely; you shall not lie to one another. Leviticus 19:11
Discussion
Both good. I might add…
“A false balance is abomination to the LORD: but a just weight is his delight.” Proverbs 11:1