A fly cannot enter a closed mouth.
More Russian Proverbs:
All ages are submissive to love.Russian
First the stable, then the cow.
Russian
A drop of water in the eyes of the Tsar costs the country many handkerchiefs.
Russian
If rubles fell from heaven the poor would have no bag.
Russian
A boat stands firmer with two anchors.
Russian
It is not the horse that draws the cart, but the oats.
Russian