युद्धे अङ्गद-मैन्द-द्विविद-राक्षसयुद्धम्; कुम्भस्य प्रादुर्भावः तथा सुग्रीवेण पराभवः (Sarga 76: Angada and the Vanara chiefs battle Kampana, Prajaṅgha, Yūpākṣa, Śoṇitākṣa; Kumbha enters and is checked by Sugrīva)
तस्मिन्हतेभीमपराक्रमेणप्लवङ्गमानामृषभेणयुद्धे ।महीसशैलासवनाचचालभयं च रक्षांस्यधिकंविवेश ।।।।
tasmin hate bhīmaparākrameṇa plavaṅgamānām ṛṣabheṇa yuddhe |
mahī saśailā savanā cacāla bhayaṃ ca rakṣāṃsy adhikaṃ viveśa ||
When he was slain in battle by the bull among the monkey-host—terrible in prowess—the earth shook with its mountains and forests, and greater fear entered the Rākṣasas.
When Kumbha was killed in combat by the bull among the monkeys of terrific courage, the earth shook with mountains and the Rakshasas feared even more.।। ityārṣēvālmīkīyēśrīmadrāmāyaṇēādikāvyēyuddhakāṇḍēṣaṭasaptatitamassargaḥ ।।This is the end of the seventy sixth sarga of Yuddha Kanda of the first epic the holy Ramayana composed by sage Valmiki.
Dharma is depicted as world-order: when a major force of adharma is removed, the cosmos responds (earth shakes) and the remaining wrongdoers are seized by fear—an ethical warning about the consequences of unrighteous alignment.
Kumbha’s death marks a turning point; nature reacts and the Rākṣasas’ morale collapses further.
Leadership-strength (netṛtva + vīrya) of Sugrīva as the foremost Vānara warrior in that moment.