भक्तमात्रव्ययत्वादल्पव्ययह् ॥ कZ_०९.४.१८ ॥
bhaktamātravyayatvād alpavyayaḥ
Because the expenditure is only for rations (bhakta), it entails low cost.
An activity needing minimal additional procurement—no major equipment or inducements—so the treasury burden is limited.