ચાંદ હથેળીમાં દેખાડે તેવા છે. હથેળીમાં પરમેશ્વર દેખાડે તેવા છે.

cāṁda hathēḷīmāṁ dēkhāḍē tēvā chē. hathēḷīmāṁ paramēśvara dēkhāḍē tēvā chē.

Literally: He is one who shows the moon in the palm of his hand; he is one who shows God in the palm of his hand.
What it means: Said of a deceitful person who promises impossible feats or pretends to work miracles.

Also said as

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.