शार्दूलचरवृत्तान्तः (Saardula’s Spy-Report on Rama’s Camp and the Vanara Host)
श्वेतोज्योतिर्मुखश्चात्रभास्करस्यात्मसम्भवौ ।वरुणस्यचपुत्त्रोऽन्योःहेमकूटःप्लवङ्गमः ।।6.30.32।।विश्वकर्मसुतोवीरोनलःप्लवगसत्तमः ।विक्रान्तोबलवानत्रवसुपुत्रस्सदुर्धरः ।।6.30.33।।
nāpi sambhāṣituṁ śakyāḥ sampraśno ’tra na labhyate |
sarvato rakṣyate panthā vānaraiḥ parvatopamaiḥ ||6.30.6||
It is not even possible to speak with them; no questioning can be done there. The way is guarded on every side by vānaras who are like mountains.
"Here are Swetha and Jyothirmukha sons of Sun god; Hemakuta another son of Varuna; Nala the foremost among the monkey heroes is the valiant son of Vishwakarma and Durdhara of swift action, the son of Vasu."
Dharma as disciplined duty: the vanaras’ collective guarding of routes reflects steadfast adherence to assigned responsibility, enabling protection of the righteous cause.
Śārdūla reports that even basic contact—conversation or interrogation—is impossible because the camp’s approaches are comprehensively secured.
Organized vigilance and unity: the vanaras’ coordinated protection makes them ‘mountain-like’ in stability and deterrence.