હરિ ભજવા હક બોલવા, દોનું બાત અવલ;

hari bhajavā haka bōlavā, dōnuṁ bāta avala;

Literally: To worship God and to speak the truth, both these things are supreme;
What it means: Devotion to God and honesty in speech are the highest virtues a person can practice.

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.