Demosthenes Against Boeotus II 10

[10] Many meetings took place about these matters, and my father declared that he would never be convinced that these men were his children, and finally Plangon, men of the jury (for the whole truth shall be told you), having in conjunction with Menecles laid a snare for my father, and deceived him by an oath that among all mankind is held to be the greatest and most awful, ¹ agreed that, if she were paid thirty minae, she would get her brothers to adopt these men, and that, on her own part, if my father should challenge her before the arbitrator to swear that the children were in very truth his sons, she would decline the challenge. For if this were done, she said, the defendants would not be deprived of their civic rights, ² but they would no longer be able to make trouble for my father, seeing that their mother had refused the oath.