Hearing the mention of the tavern (tarab), the person says that someone somewhere must be in a tavern.

This beautiful couplet suggests the overwhelming power of emotion and art. Mir Taqi Mir is saying that merely hearing the word 'Tarab'—that blissful state of emotional intoxication—is enough to plunge a person into that feeling. It speaks to the contagious nature of deep feeling; once you hear the description of beauty or passion, you can't help but feel it yourself. It's the magic of poetry!