Jaiminīya (Talavakāra) Brāhmaṇa 2.266

2.266

atha yajjāgataṃ sattṛtīyasavanaṃ gāyatreṇaivānupratipadyate brāhmaṇameva tadvaiśyasya
sve'nvābhajati
so'smai ditsati śraddhayā karmaṇopacāreṇa
yadā vai vaiśyaṃ śraddhā vindati brāhmaṇaṃ vāva sa tarhīcchati
so'smai dadāti
tadevānuṣṭubanvāyattā
atha yadanuṣṭubhaṃ gāyati - ānuṣṭubho vai śūdraḥ - brāhmaṇameva tacchūdrasya
sve'nvābhajati
so'smai ditsati śraddhayā karmaṇopacāreṇa
yadā vai śūdraṃ śraddhā vindati brāhmaṇaṃ vāva sa tarhīcchati
so'smai dadāti
kevalaṃ svaṃ kurute'pitvī kṣatre bhavatyapitvī viśi
yātyantaḥsthāṃ nāntaḥsthāyāṃ jīyate
upa hainaṃ śataṃ pariskandāstiṣṭhante'tho bhūyāṃso ya evaṃ vidvāndhuro na
vigāyatīti
sa yadi vigāyedado vidvānvigāyet
yadyu na vigāyedidaṃ vidvānna vigāyet
ārtiḥ sā yo'nyataradeva vedeti ha smāha śāṭyāyaniḥ

Now, when, though the third pressing is in the Jagatī, he proceeds with it in the Gāyatrī alone, he causes the Brahmin to share in the Vaiśya's own [property].
He wishes to give to him through faith, through work, through service.
Indeed, when faith finds a Vaiśya, then indeed he desires a Brahmin.
He gives to him.
To that very [rite] the Anuṣṭubh is appended.
Now, when he sings the Anuṣṭubh—the Śūdra belongs to the Anuṣṭubh—he causes the Brahmin to share in the Śūdra's own [property].
He wishes to give to him through faith, through work, through service.
Indeed, when faith finds a Śūdra, then indeed he desires a Brahmin.
He gives to him.
He makes his own [property] exclusive; he has a share in dominion, he has a share in the peasantry.
He attains the intermediate state; he is not defeated in the intermediate state.
A hundred attendants, or even more, attend upon him who, knowing thus, does not sing the yokes variously.
If he should sing them variously, knowing that [former teaching], let him sing them variously.
And if he should not sing them variously, knowing this [latter teaching], let him not sing them variously.
'It is misfortune for him who knows only one or the other,' said Śāṭyāyani.