આક્યું ધાન, સામું જોવાય નહીં.

ākyuṁ dhāna, sāmuṁ jōvāya nahīṁ.

Literally: The grain is marked, it should not be looked at directly.
What it means: Some things are forbidden or reserved and should not be coveted.

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.