જો ગધેડે મુલક લેવાય, તો ઘોડાનો ભાવ કાઈ પૂછત નહીં.

jō gadhēḍē mulaka lēvāya, tō ghōḍānō bhāva kāī pūchata nahīṁ.

Literally: If kingdoms could be conquered with donkeys, no one would ask the price of horses.
What it means: Incompetent tools and foolish people cannot accomplish tasks that demand genuine talent.

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.