મુઢની સોબતમાં જ્ઞાનની કતાઈ.

muḍhanī sōbatamāṁ jñānanī katāī.

Literally: In the company of a fool, knowledge is cut.
What it means: Associating with ignorant people diminishes one's own wisdom.

કહેવત સમુદાય (Kahevat Samuday) · 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.