Used to suggest that if a particular statement applies to someone, then they should accept it as true or relevant to them

यदि टोपी फिट हो जाए (किसी व्यक्ति पर लागू होती स्थिति)

English Usage: He was offended by the joke, but if the cap fits, he should wear it.

Hindi Usage: उन्हें मजाक से गुस्सा आया, लेकिन अगर बात सही हो, तो उन्हें माननी चाहिए।