दुर्गाभावे च कोशः परेषाम् ॥ कZ_०८.१.३९ ॥
durgābhāve ca kośaḥ pareṣām
而在没有堡垒时,国库将落入他人(敌人)之手。
They show a trade-off: treasury is portable (enabling retreat), yet also needs fortified protection; forts secure wealth, but wealth enables mobility and continued resistance.