ડાસીએ ડાટ વાળ્યો, હરખ હૈયાના ટાળ્યો.

ḍāsīē ḍāṭa vāḷyō, harakha haiyānā ṭāḷyō.

Literally: The old woman ruined everything, and removed the joy of the heart.
What it means: Said when someone's foolish or clumsy intervention completely ruins a joyful occasion or a promising plan.

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.