Plato, Laws 930d

θήλεια ἔστω τῷ νόμῳ. ὅταν δὲ ὁμολογῆται μὲν τὸ γενόμενον εἶναι τῶν ποιουμένων ἔκγονον, δέηται δὲ κρίσεως τίνι τὸ γεννηθὲν ἕπεσθαι χρεών, δούλη μὲν ἐὰν συμμείξῃ δούλῳ ἢ ἐλευθέρῳ ἢ ἀπελευθέρῳ, πάντως τοῦ δεσπότου ἔστω τῆς δούλης τὸ γεννώμενον, ἐὰν δέ τις ἐλευθέρα δούλῳ συγγίγνηται, τοῦ δεσπότου ἔστω τὸ γιγνόμενον τοῦ δούλου· ἐὰν δʼ ἐξ αὑτοῦ δούλης ἢ ἐκ δούλου ἑαυτῆς, καὶ περιφανὲς τοῦτʼ ᾖ, τὸ μὲν τῆς γυναικὸς αἱ γυναῖκες εἰς ἄλλην χώραν ἐκπεμπόντων

and the number which constitutes a bare sufficiency of children shall be fixed by the law at one of each sex. Whenever, in spite of agreement as to who a child’s parents are, a decision is required as to which parent the child should follow, the rule is this: in all cases where a slave-woman has been mated with a slave or with a free man or a freedman, the child shall belong to the slave-woman’s master; but if a free woman mates with a slave, the issue shall belong to the slave’s master; and if the child be a master’s by his own slave-woman, or a mistress’s by her own slave, and the facts of the case are quite clear, then the women officials shall send away the woman’s child, together with its father,