One verse

Srimad Bhagavatam 6.13.19-20

6.13.19-20

अथेज्यमाने पुरुषे सर्वदेवमयात्मनि । अश्वमेधे महेन्द्रेण वितते ब्रह्मवादिभि: ॥ १९ ॥ स वै त्वाष्ट्रवधो भूयानपि पापचयो नृप । नीतस्तेनैव शून्याय नीहार इव भानुना ॥ २० ॥

athejyamane puruse sarva-devamayatmani asvamedhe mahendrena vitate brahma-vadibhih sa vai tvastra-vadho bhuyan api papa-cayo nrpa nitas tenaiva sunyaya nihara iva bhanuna

atha
therefore
ijyamane
when worshiped
puruse
the Supreme Personality of Godhead
sarva
all
deva-maya-atmani
the Supersoul and maintainer of the demigods
asvamedhe
through the asvamedha-yajna
maha-indrena
by King Indra
vitate
being administered
brahma-vadibhih
by the saints and brahmanas expert in Vedic knowledge
sah
that
vai
indeed
tvastra-vadhah
the killing of Vrtrasura, the son of Tvasta
bhuyat
may be
api
although
papa-cayah
mass of sin
nrpa
O King
nitah
was brought
tena
by that (the horse sacrifice)
eva
certainly
sunyaya
to nothing
niharah
fog
iva
like
bhanuna
by the brilliant sun

The horse sacrifice performed by the saintly brahmanas 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.