સમાણસનો સંગ, કમાણસ કરે નહીં;

samāṇasanō saṁga, kamāṇasa karē nahīṁ;

Literally: A bad person does not keep the company of a good person;
What it means: Wicked people avoid the company of the virtuous because they lack proper manners and character.

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.