નાને મ્હોડે મોટા કાળીઓ ન ભરાય.

nānē mhōḍē mōṭā kāḷīō na bharāya.

Literally: A large mouthful should not be stuffed into a small mouth.
What it means: One should not attempt tasks or make claims far beyond one's capacity or status.

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.