When they give you the calf, be ready with the halter.
More Spanish Proverbs:
He who never has enough, never has anything.Spanish
Fools and the perverse fill the lawyers' purse.
Spanish
The turd is proud that the river will carry it.
Spanish
When ill-luck sleeps, let no one wake her.
Spanish
More things grow in the garden than the gardener sows.
Spanish
Tie up the hen that eats at your place and lays eggs elsewhere.
Spanish