Adage, saw (7)
I believe the answer is:
proverb
This clue is a double definition.
'adage' is the first definition.
(I know that adage can be written as proverb)
'saw' is the second definition.
(a saw can mean a proverb or maxim)
(Other definitions for proverb that I've seen before include "Make haste slowly, perhaps" , "Pithy saying expressing a general truth" , "Old saying, perhaps by Solomon?" , "Familiar saying" , "Saying of great truth" .)