કાળી પશુ ન માનવી, રાઝ બળદ નહીં ઊંટ;

kāḷī paśu na mānavī, rājha baḷada nahīṁ ūṁṭa;

Literally: Neither black animal nor human, neither a royal bull nor a camel;
What it means: Used to warn against trusting certain notoriously untamed or unpredictable beasts and individuals.

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.