ધ્યાન કીયે ક્યા હોત હે, જો મન મેલ ન જાય;

dhyāna kīyē kyā hōta hē, jō mana mēla na jāya;

Literally: What is the use of meditating if the filth of the mind does not go away?
What it means: Outward religious rituals and meditation are useless if one does not cleanse their heart of malice and evil thoughts.

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.