You shall not have in your pouch different weight-stones, a big one and a small one…For the abhorrence of the LORD your God is anyone who does all these things, who commits any fraud. The Talmud says that sometimes fraud is worse than sexual immorality because the latter is a private matter for which an individual can repent, whereas fraud affects the public and when we wish to repent we don’t know to whom we must make amends. Practically speaking, to atone for the sin of fraud we are advised to give to charities that serve the public although this is an imperfect fulfillment of the Torah's dictum: he shall return the theft that he stole or the fraud that he committed.