This phrase literally translates to 'He who doesn't do it at the entrance, does it at the exit.' It is used to mean that if someone doesn't do something correctly at the beginning, they will have to correct it at the end.
Examples
- Spanish: Si no estudias bien para tu examen, tendrás que retomarlo. Como dice el dicho, 'El que no la hace a la entrada, la hace en la salida'.
- English: If you don't study well for your exam, you will have to retake it. As the saying goes, 'He who doesn't do it at the entrance, does it at the exit.'