Plato, Laws 764b

πᾶσιν ἔκ τινος ἀνάγκης συνιέναι. τοὺς δὲ δὴ ἀγορανόμους τὸν περὶ τὴν ἀγορὰν κόσμον διαταχθέντα ὑπὸ νόμων φυλάττειν, καὶ ἱερῶν καὶ κρηνῶν ἐπιμελεῖσθαι τῶν κατʼ ἀγοράν, ὅπως μηδὲν ἀδικῇ μηδείς, τὸν ἀδικοῦντα δὲ κολάζειν, πληγαῖς μὲν καὶ δεσμοῖς δοῦλον καὶ ξένον, ἐὰν δʼ ἐπιχώριος ὤν τις περὶ τὰ τοιαῦτα ἀκοσμῇ, μέχρι μὲν ἑκατὸν δραχμῶν νομίσματος αὐτοὺς εἶναι κυρίους διαδικάζοντας, μέχρι δὲ διπλασίου

The market-stewards must see to it that the market is conducted as appointed by law: they must supervise the temples and fountains in the market, to see that no one does any damage; in case anyone does damage, if he be a slave or a stranger, they shall punish him with stripes and bonds, while if a native is guilty of such misconduct, they shall have power to inflict a fine up to a hundred drachmae of their own motion, and to fine a wrongdoer