धृतराष्ट्रस्य पश्चात्तापः तथा वनप्रस्थानानुज्ञा | Dhṛtarāṣṭra’s Remorse and Request for Forest-Retirement
पुरं च ते सुगुप्तं स्थाद् दृढप्राकारतोरणम् । अट्टाष्टालकसम्बाधं षट्पदं सर्वतोदिशम्
puraṁ ca te suguptaṁ sthād dṛḍha-prākāra-toraṇam | aṭṭāṣṭālaka-sambādhaṁ ṣaṭpadaṁ sarvato-diśam ||
毗湿摩波耶那说道:“当使你的城邑严密设防。环城壁垒与诸大城门须极其坚固。城中内区当遍布高耸望楼与堡垒工事,并令六重防御向四方延展。”
वैशम्पायन उवाच
A ruler’s dharma includes proactive protection: strong fortifications, vigilant planning, and layered defenses are ethical duties because they safeguard citizens and prevent avoidable harm.
Vaiśampāyana reports counsel about governance and preparedness, describing how a city should be secured—strong walls and gates, internal watchtowers, and multiple defensive layers in every direction.