Jaiminīya (Talavakāra) Brāhmaṇa 1.176

1.176

tathā ha na rūkṣo bhavati
etaddha sma vai tatpūrve brāhmaṇā mīmāṃsante ka u svidśiṃśumāryai
vyāttamatiproṣyata iti
eṣā ha vā ekāyane śiṃśumārī pratīpaṃ vyādāya tiṣṭhati yadyajñāyajñīyam
tasyā etadannādyameva mukhato'pidhāya svastyatyeti
popriṃ vayamamṛtaṃ jāto vā iti
yatpra pra vayamiti brūyātpramāyuko yajamānassyāt
atha yatpoprimityāhaiṣa evāsmai poprirbhavati
hiṃ māyi dāyivamiti
yaddāsamiti brūyāddāsuko yajamānassyāt
atha yaddāyivamityāha - divaṃ saṃstuto yajño gamayitavya ityāhuḥ -
divamevaitatsaṃstutaṃ yajñaṃ gamayanti
priyaṃ mitraṃ nu śaṃsiṣamiti
yatpriyaṃ mitraṃ na śaṃsiṣamiti brūyānna priyaṃ mitraṃ śaṃseta
atha yatpriyaṃ mitraṃ nu śaṃsiṣamityāha priyameva mitraṃ śaṃsate

Thus he does not become rough. / Now former Brahmins used to consider this: 'Who indeed would cross beyond the open jaws of the dolphin?' / This Yajñāyajñīya stands facing upstream with open jaws at the single path. / He passes safely beyond her having covered [her jaws] with food from her mouth: / 'The nourisher, we, the immortal, Jātavedas…' / If he should say: 'pra pra vayam', the sacrificer would be liable to die. / But when he says: 'poprim', this becomes a nourisher for him. / 'hiṃ māyi dāyivam'— / If he should say: 'dāsam', the sacrificer would become a slave. / But when he says: 'dāyivam'—for they say: 'The fully praised sacrifice is to be made to go to heaven'— / it is to heaven that they make the fully praised sacrifice go. / 'I would praise the dear friend now'— / If he should say: 'I would not praise the dear friend', he would not praise the dear friend. / But when he says: 'I would praise the dear friend now', he praises the dear friend.