હુકનો માલ જવાનો નહીં, અહુકનો આવવાનો નહીં.

hukanō māla javānō nahīṁ, ahukanō āvavānō nahīṁ.

Literally: Rightful property will not be lost, and unrightful property will not come.
What it means: Honest earnings are secure and lasting, whereas ill-gotten wealth never truly benefits anyone.

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.