Śatapatha Brāhmaṇa ("of a hundred paths") 13.5.4.3

13.5.4.3

ete eva pūrve ahanī jyotiratirātrastena bhīmasenamete eva pūrve ahanī gauratirātrastenograsenamete eva pūrve ahanī āyuratirātrastena śrutasenamityete pārikṣitīyāstadetadgāthayābhigītam pārikṣitā yajamānā aśvamedhaiḥ paro'varam ajahuḥ karma pāpakam puṇyāḥ puṇyena karmaṇeti

[There are] those same first two days, and a Gyotis Atirâtra: therewith (they sacrificed) for Bhîmasena;--those same first two days, and a Go Atirâtra: therewith (they sacrificed) for Ugrasena;--those same first two days, and an Âyus Atirâtra: therewith (they sacrificed) for Srutasena. These are the Pârikshitîyas, and it is of this that the Gâthâ sings,--'The righteous Pârikshitas, performing horse-sacrifices, by their righteous work did away with sinful work one after another.'