Jaiminīya (Talavakāra) Brāhmaṇa 2-7.248

2-7.248

vāgeveti
gāyatraṃ vai trirātrasya prathamamahastraiṣṭubhaṃ dvitīyaṃ jāgataṃ tṛtīyam
yadvā anyasya trirātrasya viloma tasasya saloma yasasya saloma tadanyasya
viloma
tadyadetatparaṃ sadaharavaraṃ kriyate yajamānāyaiva tatpaśūnprajanayanti na
hyamuṣmiṃlloke paśavaḥ prajāyante
ete ha khalu vai chandasāṃ vīryavattame yadgāyatrī ca triṣṭupca
tadyadgāyatrī ca triṣṭupcābhito bhavato madhye paśavo jagatī
vīryavatamevaitacchandobhyāṃ yajamānāyobhayataḥ paśūnparigṛhṇantyaparāvāpāya
nāsya vittaṃ paropyate ya evaṃ veda
asāveva trirātro yo'sau tapati
sa yathodetyevamasya prathamamaharyathā madhyandina evaṃ dvitīyaṃ yathāstametyevaṃ
tṛtīyam
sa ya etadevaṃ veda gacchatyetasya sāyujyaṃ sāṃveśyam

Speech alone. / The first day of the three-day rite belongs to the Gāyatrī; the second day belongs to the Triṣṭubh; the third day belongs to the Jagatī. / What is contrary in another three-day rite is regular in this one; what is regular in this one is contrary in another. / That this day, being higher, is made lower, thereby they propagate cattle for the sacrificer, for cattle are not born in that world. / These are indeed the most vigorous of meters: the Gāyatrī and the Triṣṭubh. / In that the Gāyatrī and the Triṣṭubh are on both sides, and in the middle cattle, the Jagatī, / they enclose cattle on both sides with these most vigorous meters for the sacrificer, so they are not scattered. / His property is not scattered, who knows this. / That one which burns yonder is indeed the three-day rite. / Just as he rises, such is its first day; as it is midday, such is the second; as he sets, such is the third. / He who knows this thus attains companionship and union with him.