τὸ λεγόμενον
From LSJ
ὃν οὐ τύπτει λόγος οὐδὲ ῥάβδος → if words don't get through, neither a beating will | if the carrot doesn't work, the stick will not work either | whom words do not strike, neither does the rod
Greek > English (Woodhouse)
according to the adage, as the phrase is, as the saying goes, as the saying is, in common parlance