Plato, Laws 882c

πρὶν ἂν ὁ δοῦλος πείσῃ τὸν πληγέντα ἄξιος εἶναι τοῦ λελυμένος ζῆν. τὰ αὐτὰ δὲ γυναιξίν τε ἔστω πρὸς ἀλλήλας περὶ πάντων τῶν τοιούτων νόμιμα, καὶ πρὸς ἄνδρας γυναιξὶ καὶ ἀνδράσι πρὸς γυναῖκας.

loosed from bonds. The same laws shall hold good for all such cases when both parties are women, or when the plaintiff is a woman and the defendant a man, or the plaintiff a man and the defendant a woman.