લોએ લડવું, કલોએ લડવું નહીં.

lōē laḍavuṁ, kalōē laḍavuṁ nahīṁ.

Literally: Fight with blood, do not fight with dishonorable arts.
What it means: Counseling that conflict should be faced through direct courage rather than cowardly or deceitful means.

Also said as

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.