He will not lost the parings of his nails.
More French Proverbs:
A honeyed tongue with a heart of gall.French
It is only good bargains that ruin.
French
To a rogue a rogue and a half.
French
One take-this, is better than two thou-shalt-haves.
French
It is good to dance on another man's floor.
French
He that reckons without his host must reckon again.
French