ચોર ને ધરાક હાથમાં આવ્યા જવા દેવા નહીં.

cōra nē dharāka hāthamāṁ āvyā javā dēvā nahīṁ.

Literally: A thief and a customer, once in hand, should not be let go.
What it means: Seize both fleeting opportunities and culprits immediately before they slip away.

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.