Bhagavatapurana 6.13.20

6.13.20

sa vai tvāṣṭravadho bhūyān api pāpacayo nṛpa /
nītastenaiva śūnyāya nīhāra iva bhānunā //

19. & 20. Now when the extensive Aswamedha sacrifice was being performed by Indra with the help of the sages versed in the Vedas and thereby the Perfect Person, the Atman and Lord of all the gods, was being worshipped, that hoard of sin, though mighty, of having killed Vritra, was, O king, reduced to nothing like mist before the sun.