માણસથી માછાં ભલાં, સાચી પ્રીતજ જાણ;

māṇasathī māchāṁ bhalāṁ, sācī prītaja jāṇa;

Literally: Fish are better than humans, know this to be true love.
What it means: Fish demonstrate the truest form of love because they cannot survive even a moment of separation from water.

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.