Plato, Laws 881d

παῖς ἐάντε ἀνὴρ ἐάντʼ οὖν γυνή, ἀμυνέτω πᾶς τὸν ἀνόσιον ἐπονομάζων· ὁ δὲ μὴ ἀμύνων ἀρᾷ ἐνεχέσθω Διὸς ὁμογνίου καὶ πατρῴου κατὰ νόμον. ἐὰν δέ τις ὄφλῃ δίκην αἰκίας γονέων, πρῶτον μὲν φευγέτω ἀειφυγίαν ἐξ ἄστεος εἰς τὴν ἄλλην χώραν καὶ πάντων ἱερῶν εἰργέσθω· μὴ δὲ εἰργόμενον κολαζόντων αὐτὸν ἀγρονόμοι πληγαῖς καὶ πάντως ὡς ἂν ἐθέλωσιν, κατελθὼν δὲ θανάτῳ ζημιούσθω. ἐὰν δέ τις τῷ τοιούτῳ, ὅσοι ἐλεύθεροι, συμφάγῃ ἢ συμπίῃ ἤ τινα

and he that fails to drive him off shall be liable by law to the curse of Zeus, guardian-god of kinship and parentage. And if a man be convicted on a charge of outrageous assault upon parents, in the first place he shall be banished for life from the city to other parts of the country, and he shall keep away from all sacred places and if he fails to keep away, the country-stewards shall punish him with stripes, and in any other way they choose, and if he returns again he shall be punished with death. And if any free man voluntarily eat or drink or hold any similar intercourse with such an one,