Amos 8:4-5

Hear this, you who trample down the needy, and do away with the poor of the land, saying, “When will the New Moon [festival] be over So that we may sell grain, And the Sabbath ended so that we may open the wheat market, Making the ephah [measure] smaller and the shekel bigger [that is, selling less for a higher price] And to cheat by falsifying the scales