Saying, motto (5)
I believe the answer is:
adage
This clue is a double definition.
'saying' is the first definition.
(adage is a kind of saying)
'motto' is the second definition.
(I've seen this in another clue)
(Other definitions for adage that I've seen before include "say it again and again!" , "Maxim, aphorism" , "Slogan" , "Old saying; proverb" , "True proverb or saying" .)