Shake hands at the beginning and at the end.
More German Proverbs:
No one knows better where the shoe pinches that he who wears it.German
Fortune and misfortune are neighbors.
German
One must either be the hammer or the anvil.
German
Mother, I must have a husband, or I shall set fire to the house.
German
Today must not borrow from tomorrow.
German
The pitcher goes so often to the well, that it gets broken at last.
German