Plato, Laws 929a

εἰς ἄλλην χώραν ἐξοικίζεσθαι τὸν ἀπάτορα—πρὸς γὰρ τοῖς τετταράκοντα καὶ πεντακισχιλίοις οἴκοις οὐκ ἔστιν ἕνα προσγενέσθαι—διὸ δὴ δεῖ τὸν ταῦτα πεισόμενον ἐν δίκῃ μὴ ὑπὸ ἑνὸς πατρός, ὑπὸ δὲ τοῦ γένους ἀπορρηθῆναι παντός. ποιεῖν δὲ χρὴ τῶν τοιούτων πέρι κατὰ νόμον τοιόνδε τινά· ὃν ἂν θυμὸς ἐπίῃ μηδαμῶς εὐτυχής, εἴτʼ οὖν ἐν δίκῃ εἴτε καὶ μή, ὃν ἔτεκέ τε καὶ ἐξεθρέψατο, τοῦτον ἐπιθυμεῖν ἀπαλλάξαι τῆς αὑτοῦ συγγενείας, μὴ φαύλως οὕτως ἐξέστω μηδʼ

since it is impossible that a single household should be added to our 5040; consequently it is necessary that the person upon whom this punishment is to be inflicted legally should be disinherited, not by his father only, but by the whole family. Such cases should be dealt with according to a law such as this:—If any man is urged by a most unhappy impulse of anger to desire, rightly or wrongly, to expel from his own kindred one whom he has begotten and reared, he shall not be permitted