કોઠ ભણતર નિશાળમાં મૂકીને આવે.

kōṭha bhaṇatara niśāḷamāṁ mūkīnē āvē.

Literally: One leaves their school learning at the school.
What it means: Said of someone who fails to apply their education or knowledge in practical life.

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.