SB 6.9.18 • मूल श्लोक

येनावृता इमे लोकास्तपसा त्वाष्ट्रमूर्तिना । स वै वृत्र इति प्रोक्त: पाप: परमदारुण: ॥ १८ ॥

Transliteration

yenāvṛtā ime lokās tapasā tvāṣṭra-mūrtinā sa vai vṛtra iti proktaḥ pāpaḥ parama-dāruṇaḥ

Synonyms (Word-for-Word)

yena — by whom; āvṛtāḥ — covered; ime — all these; lokāḥ — planets; tapasā — by the austerity; tvāṣṭra-mūrtinā — in the form of the son of Tvaṣṭā; saḥ — he; vai — indeed; vṛtraḥ — Vṛtra; iti — thus; proktaḥ — called; pāpaḥ — personified sin; parama-dāruṇaḥ — very fearful.

Translation

“That very fearful demon, who was actually the son of Tvaṣṭā, covered all the planetary systems by dint of austerity. Therefore he was named Vṛtra, or one who covers everything.”

Bhaktivedanta Purport

By Śrīla Prabhupāda
In the Vedas it is said, sa imāḻ lokān āvṛṇot tad vṛtrasya vṛtratvam: because the demon covered all the planetary systems, his name was Vṛtrāsura.