સિંહ પાંજરે પક્ષો ગરીબ.

siṁha pāṁjarē pakṣō garība.

Literally: A lion fallen into a cage becomes meek.
What it means: Even the most powerful and fierce person becomes helpless and submissive when stripped of their freedom.
The English proverb Shah set beside it: A lion in a cage is a poor creature.

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.