Adage or maxim (6)
I believe the answer is:
saying
I believe this is a double definition.
'adage' is the first definition.
(I've seen this before)
'maxim' is the second definition.
(I've seen this in another clue)
(Other definitions for saying that I've seen before include "Adage, maxim" , "Delivering" , "Expressing in words" , "Apophthegm" , "Speaking; adage" .)