When that army was being slaughtered from behind by Padmanabha (the lotus-naveled Vishnu), Malyavan thereupon turned back and stood firm, like the ocean recoiling on reaching the shore.
"O Narayana, you do not know the ancient law of the warriors (kshatriya dharma), for you slay us who are frightened and have no mind to fight, as any common man would."
parāṅmukhavadhaṃ pāpaṃ yaḥ karotyasuretaraḥ | sa hantā na gataḥ svargaṃ labhate puṇyakarmaṇām || 7.8.4 ||
Translation
"He who, though no asura but one other than an asura, commits the sin of slaying one whose face is turned away in flight — such a slayer does not go to heaven, nor does he obtain the worlds of those who perform meritorious deeds."
Seeing Malyavan standing firm like the unshakable Malyavat mountain, the mighty younger brother of the king of the gods (Vishnu, brother of Indra) spoke to that lord of the Rakshasas:
"To the gods who were stricken with fear of you I granted safety, and I pledged the destruction of the Rakshasas; that very pledge is now being fulfilled."
prāṇairapi priyaṃ kāryaṃ devānāṃ hi sadā mayā | so 'haṃ vo nihaniṣyāmi rasātalagatānapi || 7.8.8 ||
Translation
"For the welfare of the gods I must always act, even at the cost of my own life; therefore I shall slay you all, even were you to flee into the nether world (Rasatala)."
As the God of gods, his eyes like red lotuses, was speaking thus, the enraged lord of the Rakshasas pierced him with a spear between his arms (in the chest).
The spear, hurled from Malyavan's arm and resounding like the clang of a bell, gleamed upon the breast of Hari like a hundred-flashing lightning resting within a cloud.
That spear, loosed from Govinda's hand as though discharged by Skanda, longing for the Rakshasa, sped toward him like Indra's weapon flying at the collyrium-dark mountain.
Likewise, frenzied with battle, the night-roamer struck the younger brother of Vasava (Vishnu) with his fist and then drew back the distance of a bow's length.
Unable to withstand Vishnu in combat and tormented by fear, they abandoned Lanka and went, together with their wives, to dwell in Patala (the netherworld).
And there is no other slayer of the Rakshasas, those enemies of the gods and thorns in the side of the celestials, save Narayana, the god who bears the conch, the discus, and the mace.
Restorer of the order of dharma when it has perished, benefactor of creatures from age to age, fond of those who seek refuge, He takes birth for the destruction of the wicked.
O ruler of men, this entire origin of the Rakshasas has now been told by me to you faithfully, just as it was; hear further, O best of the Raghus, all about the unequaled power and birth of Ravana together with his sons.
For a long time that Rakshasa Sumali, tormented by fear of Vishnu, wandered in the netherworld of Rasatala; then the mighty lord of wealth (Kubera), accompanied by his sons and grandsons, came to dwell in Lanka.