ગાય ઉપર પલાણ નહીં.

gāya upara palāṇa nahīṁ.

Literally: No saddle on a cow.
What it means: Gentle or sacred things should not be subjected to harsh treatment or put to inappropriate uses.

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.