something said, esp. a proverb or apothegm. ?

go without saying

to be completely self-evident; be understood

It goes without saying that you are welcome to visit us at any time.

noun

adage , aphorism , apophthegm , axiom , byword , dictum , epigram , motto , precept , saw , statement , truism , utterance , maxim , affirmation , alleging , apothegm , assertion , asseveration , averment , bon mot , citation , cliche , declaration , expression , gnome , mention , mot , obiter dictum , phrase , pronunciation , proverb , recital , rehearsal , slogan , witticism