પંડ્યે ન્હાના પણ પાખંડે મ્હોટા.

paṁḍyē nhānā paṇa pākhaṁḍē mhōṭā.

Literally: Small in body but great in hypocrisy.
What it means: Said of someone who appears insignificant or young but is highly deceitful and cunning.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1921) · 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.