Devibhagavatapurana 6.8.32

6.8.32

vyasarjayatsa tāṃ devīṃ tathetyuktvā mudānvitaḥ |
sā visṛṣṭā nṛpeṇāśu gatvā prāha surānsatī ||

Thus having received permission from the King to depart, S'achî hurriedly went to the Devas and spoke to them to try their best to bring Indra back as soon as possible. O King! Hearing these sweet and holy words of Indrânî the Devas intently consulted with each other how they could get back Indra. They then went to Vaikuntha and began to praise with hymns the original Deva, the God Visnu, the Lord of the Universe, kind to those that seek His refuge. The Devas, skilled in speaking, spoke to Visnu with a very troubled heart:-- “O Lord! Indra, the Lord of the Devas, is very much troubled with his sin Brahmahattyâ. Where is he staying now, invisible to all the beings? O Lord! He is now overcome with the sin Brahmahattyâ by killing Vritra, the best of the Brâhmins. We ask your skilful and intelligent advice. O Lord! You are the sole refuge of him as well as of us. We are now involved in a great difficulty. Kindly show us the way how we, as well as Indra, can get out of this difficult crisis.” Hearing the pitiful words of the Devas, Visnu said:-- Let Indra perform the As'vamedha sacrifice (Horse sacrifice) for the purification of his sins. By this Yajña, that can destroy all sins, Indra will be purified and he will regain his Indraship; there is no doubt in this. The more so because the Devî, the Universal Mother, will be pleased with his Horse sacrifice and will destroy all his sins, Brahmahattyâ and others. Lo! Merely remembering Her destroys heaps of sins; and, if by this Horse sacrifice, She be pleased, what wonder is there that sins of a more grave nature would be destroyed! And let Indrânî worship Bhagavatî daily; happiness will undoubtedly be gained by worshipping that most Auspicious One! By this the King Nahusa will be particularly deluded by the World Mother and will then be quickly destroyed by the sin committed by himself. And Indra, purified by As'vamedha, will soon regain his position and all his wealth. O king! Thus hearing the sweet beneficial words of Visnu of indomitable prowess, the Devas went to the spot, where resided Indra. Brihaspati and the other Devas consoled the distressed Indra and made him celebrate duly in right order, the Horse sacrifice the greatest of all sacrifices. Indra then distributed his sin Brahmahattyâ amongst the trees, rivers, mountains, women, and the earth.