પરણ્યા નથી પણ જાને તો ગયા હઈશું.

paraṇyā nathī paṇa jānē tō gayā haīśuṁ.

Literally: We are not married, but surely we must have gone in the wedding procession.
What it means: Even if one does not have direct personal experience of something, they still possess general knowledge or observation of it.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.