One verse

Srimad Bhagavatam 6.13.7

6.13.7

हयमेधेन पुरुषं परमात्मानमीश्वरम् । इष्ट्वा नारायणं देवं मोक्ष्यसेऽपि जगद्वधात् ॥ ७ ॥

hayamedhena purusam paramatmanam isvaram istva narayanam devam moksyase ’pi jagad-vadhat

hayamedhena
by the sacrifice known as asvamedha
purusam
the Supreme Person
paramatmanam
the Supersoul
isvaram
the supreme controller
istva
worshiping
narayanam
Lord Narayana
devam
the Supreme Lord
moksyase
you will be liberated
api
even
jagat-vadhat
from the sin for killing the whole world.

The rsis continued: O King Indra, by performing an asvamedha sacrifice and thereby pleasing the Supreme Personality of Godhead, who is the Supersoul, Lord Narayana, the supreme controller, one can be relieved even of the sinful reactions for killing the entire world, not to speak of killing a demon like Vrtrasura.