One verse

Srimad Bhagavatam 6.17.39

6.17.39

एतत्ते सर्वमाख्यातं यन्मां त्वं परिपृच्छसि । वृत्रस्यासुरजातेश्च कारणं भगवन्मते: ॥ ३९ ॥

etat te sarvam akhyatam yan mam tvam pariprcchasi vrtrasyasura-jates ca karanam bhagavan-mateh

etat
this
te
unto you
sarvam
all
akhyatam
explained
yat
which
mam
me
tvam
you
pariprcchasi
asked
vrtrasya
of Vrtrasura
asura-jateh
whose birth was in a species of asuras
ca
and
karanam
the cause
bhagavat-mateh
of exalted intelligence in Krsna consciousness.

My dear King Pariksit, you inquired from me how Vrtrasura, a great devotee, took birth in a demoniac family. Thus I have tried to explain to you everything about this.