Mbh 12.343.2k

, Agastya, born within a jar, of the vital seed of Maitravaruna, beheld those foremost of Rishis insulted by Nahusha in that way. Him Nahusha struck with his foot. Unto him, Agastya said,--'Wretch, as thou hast betaken thyself to a highly improper act, do thou fall down on the Earth. Be transformed into a snake and do thou continue to live in that form as long as the Earth and her hills continue.' As soon as these words were uttered by the great Rishi, Nahusha fell down from that vehicle. The three worlds once more became master-less. The deities and the Rishis then united together and proceeded to where Vishnu was and appealed to him for bringing about the restoration of Indra. Approaching him, they said,--'O holy one, it behoveth thee to rescue Indra who is overwhelmed by the sin of Brahmanicide.' The boon-giving Vishnu replied unto them, saying,--'Let Sakra perform a Horse-sacrifice in honour of Vishnu. He will then be restored to his former position.' The deities and the Rishis began to search for Indra, but when they could not find him, they went to Sachi and said unto her,--'O blessed lady, go unto Indra and bring him here.' Requested by them, Sachi once more proceeded to the lake Manasa. Indra, rising from the lake, came to Vrihaspati. The celestial priest Vrihaspati then made arrangements for a great Horse-sacrifice, substituting a black antelope for a good steed every way fit to be offered up in sacrifice. Causing Indra, the lord of the Maruts, to ride upon that very steed (which was saved from slaughter) Vrihaspati led him to his own place. The lord of heaven was then adored with hymns by all the deities and the Rishis. He continued to rule in heaven, cleansed of the sin of Brahmanicide which was divided into four portions and ordained to reside in woman, fire, trees, and kine.