Tanach zu Dewarim 25:13

לֹֽא־יִהְיֶ֥ה לְךָ֛ בְּכִֽיסְךָ֖ אֶ֣בֶן וָאָ֑בֶן גְּדוֹלָ֖ה וּקְטַנָּֽה׃ (ס)

Du sollst nicht in deinem Beutel [zum Betrügen beim Kauf oder Verkauf] zweierlei Gewichtsteine haben, große und kleine.

Leviticus

You shall not commit injustice in judgement; in [land] measure, in weight or in volume measure.
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Leviticus

Just scales and just weights a just dry measure (ephah) and a just liquid measure (hin) you shall have for yourselves, I am Adonoy, your God who has taken you out of the land of Egypt.
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Leviticus

If you sell anything to your neighbor, or purchase [something] from your neighbor, do not cheat one another.
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