ઊભરે હડે ત્યારે પાણી છાંટવું.

ūbharē haḍē tyārē pāṇī chāṁṭavuṁ.

Literally: When it boils over, sprinkle water.
What it means: One must take immediate, cooling action when a situation becomes too heated.

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.