Jaiminīya (Talavakāra) Brāhmaṇa 1.216

1.216

vayamu tvā tadidarthāḥ iti kāṇvam
kaṇvo vai nārṣado jyogapratiṣṭhitaścaranso'kāmayata pratitiṣṭheyamiti
sa etatsāmāpaśyat
tenāstuta
sa rantāyā ityeva nidhanamupait
arata iva vā eṣa bhavati yo na pratitiṣṭhati
lelevalelayeva vai rātrī ratirvā eṣā
tataḥ sa pratyatiṣṭhat
tadetatpratiṣṭhā sāma
pratitiṣṭhati ya evaṃ veda
yadu kaṇvo nārṣado'paśyattasmātkāṇvamityākhyāyate
indrāya madvane sutamiti madvatīrbhavanti
raso vai madaḥ
dhītevaiṣā yadrātriḥ pīḍiteva
nābhiṣunvanti
yadevādastṛtīyasavanādṛjīṣamatirecayanti tenāsyāṃ caranti
tadyadetā madvatīrbhavanti rasamevāsyāmetaddadhati
ṣavaināmetena pyāyayanti

"Indeed, we too with that purpose..."—[on this verse is] the Kāṇva. Kaṇva Nārṣada, wandering for a long time without a firm standing, desired: "May I find a firm standing!" He saw this sāman. He praised with it. He approached the finale with "rantāyai". Indeed, he who does not find a firm standing is, as it were, restless. The night is, as it were, wavering, or it is rest. Thereupon he found a firm standing. This is a sāman of firm standing. Whoever knows thus finds a firm standing. And because Kaṇva Nārṣada saw it, it is called the Kāṇva. "Pressed for exhilarating Indra"—[the verses] have [the word] "exhilarating" (madvat). Exhilaration is sap. The night is, as it were, sucked out, as it were, squeezed dry. They do not press [fresh soma]. What sediment they leave over from the third pressing, with that they proceed in this [night]. In that these [verses] have [the word] "exhilarating", they thereby place sap in it. With this, indeed, they swell it.