Who eats capon, capon comes to him.
More French Proverbs:
The bird ought not to soil its own nest.French
The one with a running nose always wants to blow someone else's.
French
No one is expected to achieve the impossible.
French
He puts his sickle into another man's harvest.
French
The worst jests are those which are true.
French
There is no flying without wings.
French