ખાધે રાજના ભંડાર ખુટીજાય.

khādhē rājanā bhaṁḍāra khuṭījāya.

Literally: By eating, even the king's treasury will run out.
What it means: Even the largest resources will be exhausted if they are consumed without replenishment.

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.