વેપારે વાણીઆ, રણ જણાય રજપૂત;

vēpārē vāṇīā, raṇa jaṇāya rajapūta;

Literally: A Bania is known in trade, a Rajput is known in battle;
What it means: The true character and worth of a person are revealed when they are tested in their respective natural domains or professions.

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.