બેઠાની ડાળ કાપવી નહીં.

bēṭhānī ḍāḷa kāpavī nahīṁ.

Literally: Do not cut the branch on which you are sitting.
What it means: Warns against harming or destroying the source of one's own support.
The English proverb Shah set beside it: Cast not dirt in the well that gives you water.

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.