તરકડાથી તંત, કાઈ દી કરીએ નહીં;

tarakaḍāthī taṁta, kāī dī karīē nahīṁ;

Literally: Never form an alliance or dispute with a Turk;
What it means: Associating or quarreling with untrustworthy or aggressive people will only lead to one's ruin.

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.