[look] before {sb} [leap]

to consider all the possible outcomes of one's action before doing it

The phrase "look before someone leap" is an old English idiom that advises caution and careful consideration before taking any action or making a decision. Its origins can be traced back to various forms in English literature over several centuries. The is used to emphasize the importance of thinking through the potential consequences or risks of an action before acting impulsively or without due consideration.

His tendency to act without thinking led to many mistakes, so his mother constantly reminded him to "look before you leap."
The team decided to "look before they leaped" by conducting a feasibility study before launching a new product.
Before making a substantial financial investment, it's wise to "look before you leap" and conduct thorough research.
When faced with an important life choice, she always remembered to "look before she leaped" to ensure a well-informed decision.
In the world of business, it's a valuable lesson to "look before you leap" into partnerships or major acquisitions to avoid costly errors.