One verse

Srimad Bhagavatam 6.12.23

6.12.23

श्रीशुक उवाच इति ब्रुवाणावन्योन्यं धर्मजिज्ञासया नृप । युयुधाते महावीर्याविन्द्रवृत्रौ युधाम्पती ॥ २३ ॥

sri-suka uvaca iti bruvanav anyonyam dharma-jijnasaya nrpa yuyudhate maha-viryav indra-vrtrau yudham pati

sri-sukah uvaca
Sri Sukadeva Gosvami said
iti
thus
bruvanau
speaking
anyonyam
to one another
dharma-jijnasaya
with a desire to know the supreme, ultimate religious principle (devotional service)
nrpa
O King
yuyudhate
fought
maha-viryau
both very powerful
indra
King Indra
vrtrau
and Vrtrasura
yudham pati
both great military commanders.

Sri Sukadeva Gosvami said: Vrtrasura and King Indra spoke about devotional service even on the battlefield, and then as a matter of duty they again began fighting. My dear King, both of them were great fighters and were equally powerful.