हिरण्यधान्यापचयो व्ययः ॥ कZ_०९.४.०२ ॥
hiraṇya-dhānya-apacayo vyayaḥ.
Diminution of gold and grain is “expenditure” (vyaya).
He treats both money and staples as core state resources: currency for payments and grain for sustaining troops and population during campaigns or shocks.