Śrīmad-Bhāgavatam 6.9.18
యేనావృతా ఇమే లోకాస్తపసా త్వాష్ట్రమూర్తినా ।
స వై వృత్ర ఇతి ప్రోక్త: పాప: పరమదారుణ: ॥ ౧౮ ॥
yenāvṛtā ime lokās
[yenaavritaa ime lokaas]
tapasā tvāṣṭra-mūrtinā
[tapasaa tvaashtra-moortinaa]
sa vai vṛtra iti proktaḥ
[sa vai vritra iti proktah]
pāpaḥ parama-dāruṇaḥ
[paapah parama-daarunah]
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.
Blended reading (Sanskrit + English inline)
yenāvṛtā ime lokās
yena
by whom
āvṛtāḥ
covered
ime
all these
lokāḥ
planets
tapasā tvāṣṭra-mūrtinā
tapasā
by the austerity
tvāṣṭra-mūrtinā
in the form of the son of Tvaṣṭā
sa vai vṛtra iti proktaḥ
saḥ
he
vai
indeed
vṛtraḥ
Vṛtra
iti
thus
proktaḥ
called
pāpaḥ parama-dāruṇaḥ
pāpaḥ
personified sin
parama-dāruṇaḥ
very fearful.
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.
Purport
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.
— A.C. Bhaktivedanta Swami Prabhupāda
Gauḍīya Ācāryas
Viśvanātha Cakravartī Ṭhākura
Gauḍīya
Translation
This sinful, extremely cruel son of Tvaṣṭā was called Vṛtra “one who covers,” because he covered the whole world with suffering.
The worlds were covered by Vṛtrā whose form was related to Tvaṣṭā.
Related lectures
My note
Source: vedabase.io