He who pays the piper calls the tune.
More French Proverbs:
At the wars as they do at the wars.French
The long awaited Easter feast is over in one day.
French
He who eats of the king's goose will void a feather forty years after.
French
It is at home, not in public, that one washes his dirty linen.
French
Snarling curs never want sore ears.
French
You must not throw stones into your neighbor's garden.
French