He washes his hand.
More Hungarian Proverbs:
His hay is in order.Hungarian
He knows as much about it as a hen does about the alphabet.
Hungarian
Rust cannot do any harm to gold.
Hungarian
He that is afraid of water, will not get into the boat.
Hungarian
Something has caused anger, despair but one was compelled to stand idly by.
Hungarian
Do more things by wisdom than by force.
Hungarian