હંસા પ્રીતું કાયકી, વિપત પડે ઊડ જાય;

haṁsā prītuṁ kāyakī, vipata paḍē ūḍa jāya;

Literally: What kind of love is a swan's love; when adversity strikes, it flies away.
What it means: Fair-weather friends abandon one at the first sign of trouble.

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.