માણસની ઓળમાં નહીં તેને શું કહેવું.

māṇasanī ōḷamāṁ nahīṁ tēnē śuṁ kahēvuṁ.

Literally: What can be said to one who is not even in the category of humans?
What it means: It is useless to argue with or expect decent behavior from someone who lacks basic humanity or manners.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) 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.