મનુષ્યમાં નાપિક જુઓ, કાગ પંખી નિરધાર;

manuṣyamāṁ nāpika juō, kāga paṁkhī niradhāra;

Literally: Among humans observe the barber, and among birds surely the crow;
What it means: Certain types are notoriously cunning and sharp-witted in their respective spheres.

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.