Shloka 6.99.4
Mahāpārśva-vadhaḥ — The Slaying of Mahāpārśva (Angada’s Counterstrike)
तेऽर्दिताबाणवर्षेणमहापार्श्वेनवानराः ।।।।विषादविमुखाःसर्वेबभूवुर्गतचेतसः ।
athendraśatrus tridivālayānāṃ vanaukasaṃ caiva mahāpraṇādam | śrutvā saroṣaṃ yudhi rākṣasendraḥ punaś ca yuddhābhimukho 'vatasthē ||
Then the rākṣasa-king, Indra’s foe, hearing the mighty tumult raised by the dwellers of heaven and by the forest-dwelling Vānaras, blazed with wrath and once more stood facing the battle.
By the rain of arrows of Mahaparsva, the Vanaras were dejected and wore a sad look on their face and lost senses.
Refusal to heed truth (satya) and moral warning leads to persistence in adharma: Rāvaṇa responds to omens and opposition not with reflection, but with renewed rage.
Hearing the triumphant uproar of vānaras and the approving clamor of the gods, Rāvaṇa becomes enraged and prepares to re-enter combat.
Negatively framed: the lack of विवेक (discernment). The verse highlights how anger can harden one against ethical correction.