Today’s sentences and words come with no external references intended.
“кто обзывается, тот сам так называется”
“It takes one to know one”
“Se, joka haukkuu, on ite” or more formally “Joka toisia haukkuu, on itse se”
Picking up words here:
тот - that - tuo, se
сам - self - itse
так - so, thus - niin
Never heard this one, but apparently this one is also used in English for the same effect: I’m rubber, you’re glue - Wiktionary