Familiar saying (7)

I think it could be either:

Which length description are you looking for?:

proverb

'familiar saying' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for proverb that I've seen before include "Generally true saying" , "Well-known statement incorporating general truth" , "Aphorism" , "Short saying expressing a supposed truth" , "Adage, pithy saying" .)

I've seen this clue in The Times.

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