Look before you leap
Definition 1 of 1
Pro Tip 1/3Decision Making
Used when advising caution and careful thought before making a decision. 
I know you're tempted by the offer, but look before you leap.
Pro Tip 2/3Risk Management
Emphasizes evaluating potential risks in a situation. 
He decided to look before he leaped and checked the company's financials.
Pro Tip 3/3Impulsive Actions
Warns against acting on impulse without considering the possible results. 
She almost booked the flight on a whim but remembered to look before she leaped.