શૂરા તેજ ધરે નહીં, જુધરણ કુંડે ગમાંડ; સત અચન પાલે નહીં, ઊલટ જાય બ્રહ્માંડ.

śūrā tēja dharē nahīṁ, judharaṇa kuṁḍē gamāṁḍa; sata acana pālē nahīṁ, ūlaṭa jāya brahmāṁḍa.

Literally: The brave do not lose their luster in the fury of the battlefield; even if the universe is overturned, they do not break their word of truth;
What it means: True heroes remain steadfast in battle and never break their promises, no matter how catastrophic the circumstances.

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.