મુશ્કેલીમાં મિત્રની, ખરી કસોટી થાય;

muśkēlīmāṁ mitranī, kharī kasōṭī thāya;

Literally: In difficulty, a friend is truly tested.
What it means: You only know who your real friends are when you face hardship.
The English proverb Shah set beside it: A friend in need is a friend indeed.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) 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.