Theomnestus and Apollodorus Against Neaera (106)

And he does not suffer anyone to become an Athenian in the later period, unless he be made such at the time and be approved by the court, for fear that numbers of people, by claiming to be Plataeans, might acquire for themselves the right of citizenship. And furthermore, he defined at once in the decree the rule applying to the Plataeans in the interest of the city and of the gods, declaring that it should not be permitted to any of them to be drawn by lot for the office of the nine archons or for any priesthood, but that their descendants might be so drawn, if they were born from mothers who were of Attic birth and were betrothed according to the law.