दुर्गादीनि च कर्माणि प्रभूत्येन क्रियन्ते ॥ कZ_०७.११.०८ ॥
durgādīni ca karmāṇi prabhūtyena kriyante
筑城设防及相关的国家工程,依赖资源的充裕而得以实施。
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.