Closing the barn door after the horse escapes

Don't shut the barn door after the horse is stolen

Don't close the barn door after the horse runs away

It's like shutting the barn door after the horse escaped,

If something is wrong, it is like locking the barn door after the horse is stolen, ... But we are still going to pursue it. I want to know what they bought with the money.

It's no use locking the stable door after the horse has bolted