돌다리도 두들겨 보고 건너라는 말처럼 · 돌다리도 두들겨 보고 건너야죠
look before you leap; be careful even when something seems safe
Example
돌다리도 두들겨 보고 건너라는 말처럼 계약서는 꼼꼼히 읽어야 해요.
As they say, look before you leap, so read the contract carefully.
Word parts
Literally 'tap even a stone bridge before you cross it.'