Jaiminīya (Talavakāra) Brāhmaṇa 2-8.305

2-8.305

athaiṣa babarasaptarātraḥ
tasya saptadaśameva prathamamaharatha trivṛdatha pañcadaśamathaikaviṃśamatha triṇavamatha
trayastriṃśaṃ jyotiratirātraḥ
eteno ha sa īje śrīkāmo'nnādyakāmaḥ
ātmā vai pṛṣṭhyaṣṣaḍaha iti
mukhaṃ trivṛdannaṃ saptadaśaḥ
sa prathamata eva mukhato'nnādyaṃ dhāsye so'nnāda śreṣṭha svānāṃ bhaviṣyāmīti
atho saṃvatsaro vai pṛṣṭhyaṣṣaḍahastanmā saṃvatsarasya
purastādannādyamavaruddhamupasthāsyata iti
jyotiratirātraḥ
etadvai prajñātaṃ devatīrthaṃ yajjyotiratirātraḥ
sa u prajñātena devatīrthenāriṣṭenāriṣṭa udṛcaṃ gamiṣyāmīti tamu ha sva
evāntevāsyanuvyājahāra -

Now this is the Babara seven-day rite.
Its first day is seventeenfold; then the ninefold; then the fifteenfold; then the twenty-onefold; then the twenty-sevenfold; then the thirty-threefold; the Jyotir-Atirātra.
With this he sacrificed, desiring fortune, desiring food.
"The pṛṣṭhya six-day period is the body," [he thought].
"The ninefold is the mouth; the seventeenfold is food.
I shall place food right at the beginning, in the mouth; so I shall be an eater of food, the foremost among my own people," [he thought].
"Moreover, the pṛṣṭhya six-day period is indeed the year; therefore food, obtained in front of the year, will be at my disposal," [he thought].
The Jyotir-Atirātra [is the final day].
This is indeed the known ford of the gods, namely the Jyotir-Atirātra.
"By the known ford of the gods, unharmed, I shall unharmed reach the completion," [he thought]. To him, his own pupil prophesied: