Save a thief from the gallows and he’ll be the first who shall cut your throat.
More Italian Proverbs:
He would be a good one to send for death.Italian
Dogs bark, but the caravan goes on.
Italian
He that has swallowed the devil may swallow his horns.
Italian
A favor to come is better than a hundred received.
Italian
Poor men do penance for rich men's sins.
Italian
He who eats pears with his master should not choose the best.
Italian