Jaiminīya (Talavakāra) Brāhmaṇa 2-4.145

2-4.145

abhipūrvāṇāmeva paśūnāmavaruddhyai
tadāhurapāvamānyo na pavamāne kāryā iti
tadu vā āhuḥ pāvamānya evāmuṣya vā etāścandramasa ṛcaḥ
eṣa vai pavamāna eṣa somo rājā
tasmātkāryā eveti
sumanmā vasvī rantī sūnarī surūpa vṛṣannā gahi
imau bhadrau dhuryāvabhi tāvimā upasarpataḥ
nīva śīrṣāṇi mṛḍhvaṃ madhya āpasya tiṣṭhati
śṛṅgebhirdaśabhirdiśan
iti ye ha vā eta ādityasya raśmaya etāni ha vā etasya śṛṅgāṇi
madhya u ha vā eṣa etadapām
tāsu vāravatīyam
yadanena karmaṇāvārutsmahi tanno vāravantīyena vāritamantata upatiṣṭhātā iti
tadu vā āhuryadvāvānyā vāṅnātivadati tadetasyāhno'gniṣṭomasāma kāryam
yajñāyajñīyaṃ vāvānyā vāṅnātivadati
vāgvai yajñāyajñīyam
kuto hi vāgvācamativadiṣyati
tasmādetasyāhno yajñāyajñīyamevāgniṣṭomasāma kāryamiti

— verily to secure cattle one after another.
Regarding this they say: ‘Verses not addressed to Pavamāna should not be used in the Pavamāna [lauds].’
And regarding this they also say: ‘Verses addressed to Pavamāna [should be used], for these are the verses of that moon.
He indeed is Pavamāna; he is King Soma.
Therefore they should indeed be used.’
‘Well-minded, bountiful, rejoicing, joyous, fair-formed, O bull, come hither! / These two auspicious draft-oxen—unto them these two creep up. / Wipe downward, as it were, the heads; he stands in the midst of the water, / pointing with ten horns.’
Those which are the rays of that sun are indeed his horns.
And he is in the midst of these waters.
On these [verses] the Vāravantīya [sāman is sung].
‘What we have obtained by this rite, may that remain held for us at the end by the Vāravantīya [sāman]!’
And regarding this they also say: ‘That which no other speech excels should be made the Agniṣṭoma-sāman of this day.’
No other speech excels the Yajñāyajñīya [sāman].
Speech indeed is the Yajñāyajñīya.
For whence could speech excel speech?
Therefore the Yajñāyajñīya should be made the Agniṣṭoma-sāman of this day.