સાચે રાયે રામ, જુઠાને કપાળે ડામ,

sācē rāyē rāma, juṭhānē kapāḷē ḍāma,

Literally: God is with the truthful, and the liar gets a brand on the forehead.
What it means: Honest people are blessed by God, while liars are eventually exposed and punished.

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.