Srimad-Bhagavatam: Canto 6 - Chapter 1 - Verse 19-20
Sanskrit:
अथेज्यमाने पुरुषे सर्वदेवमयात्मनि ।अश्वमेधे महेन्द्रेण वितते ब्रह्मवादिभि: ॥ १९ ॥स वै त्वाष्ट्रवधो भूयानपि पापचयो नृप ।नीतस्तेनैव शून्याय नीहार इव भानुना ॥ २० ॥
ITRANS:
athejyamāne puruṣesarva-devamayātmaniaśvamedhe mahendreṇavitate brahma-vādibhiḥ
Translation:
The horse sacrifice performed by the saintly brāhmaṇas relieved Indra of the reactions to all his sins because he worshiped the Supreme Personality of Godhead in that sacrifice. O King, although he had committed a gravely sinful act, it was nullified at once by that sacrifice, just as fog is vanquished by the brilliant sunrise.