Plato, Laws 949a

διʼ ὅρκων ἢ διὰ φορᾶς ψήφων ἀφʼ ἱερῶν φέροντα δρᾶν ἀεὶ τὸ τοιοῦτον, καὶ κριτὴν αὖ χορῶν καὶ πάσης μουσικῆς καὶ γυμνικῶν τε καὶ ἱππικῶν ἄθλων ἐπιστάτας καὶ βραβέας καὶ ἁπάντων ὁπόσα μὴ φέρει κέρδος κατὰ τὴν ἀνθρωπίνην δόξαν τῷ ἐπιορκοῦντι· τῶν δὲ ὁπόσα ἐξαρνηθέντι καὶ ἐξομοσαμένῳ κέρδος μέγα φανερὸν εἶναι δοκεῖ, ταῦτα δὲ διὰ δικῶν ὅρκων χωρὶς κρίνεσθαι σύμπαντας τοὺς ἐπικαλοῦντας ἀλλήλοις. καὶ τὸ παράπαν ἐν δίκῃ τοὺς προέδρους μὴ

by voting under oath or by bringing his votes from a sacred spot, and by the judge of choirs or of any musical performance, and by the presidents and umpires of gymnastic and horse-racing contests, or of any matters which do not, in human opinion, bring gain to him who commits perjury. But in all cases where it obviously appears that a large gain will accrue to him who denies stoutly and swears ignorance, all the contending parties must be judged