Plato, Laws 742c

πρὸς τούτοις μὴ ἐλάττονι τοῦ ξενικοῦ κομισθέντος νομίσματος. γαμοῦντα δὲ καὶ ἐκδιδόντα μήτʼ οὖν διδόναι μήτε δέχεσθαι προῖκα τὸ παράπαν μηδʼ ἡντινοῦν, μηδὲ νόμισμα παρακατατίθεσθαι ὅτῳ μή τις πιστεύει, μηδὲ δανείζειν ἐπὶ τόκῳ, ὡς ἐξὸν μὴ ἀποδιδόναι τὸ παράπαν τῷ δανεισαμένῳ μήτε τόκον μήτε κεφάλαιον· ταῦτα δʼ ὅτι βέλτιστʼ ἐστὶν πόλει ἐπιτηδεύματα ἐπιτηδεύειν, ὧδε ἄν τις σκοπῶν ὀρθῶς

brought in. In marrying or giving in marriage, no one shall give or receive any dowry at all. No one shall deposit money with anyone he does not trust, nor lend at interest, since it is permissible for the borrower to refuse entirely to pay back either interest or principal. That these are the best rules for a State to observe in practice, one would perceive rightly