δίκην αἱρεῖν
From LSJ
αὐτὸν κέκρουκας τὸν βατῆρα τοῦ λόγου → you have struck the very threshold of the argument, you have struck the most important and chiefmost point
Greek > English (Woodhouse)
secure a conviction, secure a verdict, win a case, win one's case
