聞いて極楽見て地獄
Meanings
1
don't believe everything you hear; hearsay paradise, reality hell
Proverb warning that things heard about often sound wonderful, but the reality can be harshly disappointing.
The proverb 'hearing it's paradise, seeing it's hell' means that something may sound wonderful when you only hear about it, but when you actually see it, it's disappointing.