Jaiminīya (Talavakāra) Brāhmaṇa 2-5.167

2-5.167

athaiṣa śunaskarṇastomaḥ
śunaskarṇo ha vai vārṣṇyakaḥ puṇyakṛdapāpakṛdāsa
sa ha cakame puṇyamevāsmim̐lloke kṛtvāpāpaṃkṛtya svargaṃ lokaṃ gaccheyamiti
sa etaṃ yajñamapaśyat
tamāharat
tenāyajata
tato vai sa puṇyamevāsmim̐lloke kṛtvāpāpaṃkṛtya svargaṃ lokamagacchat
sa yaḥ puṇyakṛtkāmayeta puṇyamevāsmim̐lloke kṛtvāpāpaṃkṛtya svargaṃ lokaṃ
gaccheyamiti sa etena yajeta
puṇyamevāsmim̐lloke kṛtvāpāpaṃkṛtya svargaṃ lokaṃ gacchati
sa trivṛdbhavati
parāṅiva ha vā eṣaḥ
svargameva lokamabhinirmṛṣṭo yattrivṛtstomaḥ
parāṅevaitena svargaṃ lokameti
tasya parāñcyeva stotrāṇi bhavanti parāñci śastrāṇi parāñci pṛṣṭhāni
parācīrviṣṭutayaḥ
parāṅeva sarvo bhavati
pravatīṣu stuvanti parāñcamevainaṃ tadamuṃ lokaṃ gamayanti

Now this is the Śunaskarṇa stoma.
Śunaskarṇa Vārṣṇyaka was a doer of good deeds and not a doer of evil deeds.
He desired: 'May I, having done only good and having avoided doing evil in this world, go to the heavenly world.'
He saw this sacrifice.
He brought it forth.
He sacrificed with it.
Then, having done only good and having avoided evil in this world, he went to the heavenly world.
He who is a doer of good and desires: 'May I, having done only good and having avoided doing evil in this world, go to the heavenly world'—let him sacrifice with this.
Having done only good and having avoided doing evil in this world, he goes to the heavenly world.
It is threefold (trivṛt).
This [rite] indeed looks away [from this world].
In that the stoma is threefold, it is directed straight toward the heavenly world.
Facing forward, he goes to the heavenly world by means of it.
Its stotras are facing forward, its śastras are facing forward, its pṛṣṭhas are facing forward,
its viṣṭutis are facing forward;
everything about it is facing forward.
They praise on [verses] containing [the preposition] pra ('forth'): thus they make him go forth, facing away, to that world.