નહી પાને નહી પુસતકે, નહી આપ દાદાને વારે, તે માનવામાં કેમ આવે.

nahī pānē nahī pusatakē, nahī āpa dādānē vārē, tē mānavāmāṁ kēma āvē.

Literally: Not in pages, not in books, not in the grandfather's time, how can that be believed?
What it means: Used to express disbelief in something that has no historical or written precedent.

કહેવત સમુદાય (Kahevat Samuday) · 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.