कोशमादाय च व्यसने शक्यमपयातुं न दुर्गमिति ॥ कZ_०८.१.३६ ॥
kośamādāya ca vyasane śakyamapayātuṃ na durgamiti
In a calamity one can withdraw by taking the treasury along; one cannot do so with a fort.
Maintain movable reserves and secure custody systems so the state can preserve capacity even when territory/forts are temporarily lost.