विभीषणाभिषेकः — The Consecration of Vibhishana and Counsel on Crossing the Ocean
रामसेनापतिस्तस्यप्रहास्तोयदिवाश्रुतः ।कैलासेयेनसङ्ग्रामेमणिभद्रःपराजितः ।।6.19.11।।
baddhagodhāṅgulitraś cāvadhyakavaco yudhi | dhanur ādāya yas tiṣṭhann adṛśyo bhavatīndrajit ||
And Indrajit—his fingers bound with iguana-hide guards and clad in an impenetrable cuirass—stands in battle with bow in hand, becoming unseen.
"Rama! You might have heard of Prahastha who the commander in chief of his (Ravana's) army is by whom Manibhadra (Kubera's Commander of Army) was defeated in a comb at in Kailas (the abode of Siva)."
Dharma in warfare includes preparedness and protection of allies: knowing an enemy’s capacities prevents reckless loss and supports a more just conduct of battle.
Vibhīṣaṇa warns Rāma about Indrajit’s special protections and deceptive tactics (invisibility) in combat.
Vibhīṣaṇa’s foresight and truthfulness—he prioritizes the safety of those who accepted him.