ઊંધી ઇંટનો ચણનાર કડીઓ.

ūṁdhī iṁṭanō caṇanāra kaḍīō.

Literally: A mason who lays bricks upside down.
What it means: Describes someone who is incompetent or does things in a way that guarantees failure.

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.