दुर्गादीनि च कर्माणि प्रभूत्येन क्रियन्ते ॥ कZ_०७.११.०८ ॥
durgādīni ca karmāṇi prabhūtyena kriyante
A fortificação e as obras estatais correlatas são realizadas por meio da abundância (de recursos).
A surplus base—adequate revenue, materials, and supplies—because fortification is capital-intensive and long-term.
Secure and grow the resource base first; major defense works follow from sustained surplus, not from ad hoc extraction.