Aitareyabrahmana 2.13

2.13

tad āhuḥ:
kā svāhākṛtīnām puronuvākyāḥ kaḥ praiṣaḥ kā yājyeti
yā evaitā anvāhaitāḥ puronuvākyā,
yaḥ praiṣaḥ sa praiṣo, yā yājyā sā yajyā
tad āhuḥ:
kā devatāḥ svāhākṛtaya iti
Viśve devā iti brūyāt
tasmāt svāhākṛtaṃ havir adantu devā iti yajantīti
devā vai yajñena śrameṇa tapasāhutibhiḥ svargaṃ lokam ajayaṃs,
teṣāṃ vapāyām eva hutāyāṃ svargo lokaḥ prākhyāyata,
te vapām eva hutvānādṛtyetarāṇi karmāṇy ūrdhvāḥ svargaṃ lokam āyaṃs.
tato vai manuṣyāś ca ṛṣayaś ca devānāṃ yajñavāstv abhyāyan:
yajñasya kiṃcid eṣiṣyāmaḥ prajñātyā iti.
te 'bhitaḥ paricaranta et paśum eva nirāntraṃ śayānaṃ,
te vidur: iyān vāva kila paśur yāvatī vapeti
sa etāvān eva paśur yāvatī vapā/tha
yad enaṃ tṛtīyasavane śrapayitvā juhvati:
bhūyasībhir na āhutibhir iṣṭam asat, kevalena naḥ paśuneṣṭam asad iti
bhūyaslbhir hāsyāhutibhir iṣtam bhavati,
kevalena hāsya paśuneṣtam bhavati ya evaṃ veda

ii. 13 (vii. 3). They say, 'What are the invitatory verses of the calls of Hail! What the direction? What the offering verse?' These which he recites are the invitatory verses, the direction is the direction; the offering verse the offering verse. They say, 'What is the deity of the calls of Hail!?' 'The All-gods' he should reply. Therefore they use as offering verse 'May the gods eat the oblation over which has been said the call of Hail!' The gods by the sacrifice, by zeal, by fervour, by the libations went to the world of heaven; when the omentum had been offered the world of heaven was discerned by them; having offered the omentum, disregarding the other rites they went aloft to the world of heaven. Then the men and the seers came to the place of sacrifice of the gods, 'We shall seek something of the sacrifice for discernment.' They went round, and lo the victim lying without entrails! They perceived 'The victim is just so much as the omentum.' The victim is just so much as the omentum. In that having cooked it they offer it at the third pressing, (it is because they think) 'Let our sacrifice be performed with many libations; let our sacrifice be with the victim whole.' His sacrifice is performed with many libations; his sacrifice is with the victim whole who knows thus.