Gopathabrahmana 1.1.27

1.1.27

katimātra iti_
ādes tisro mātrāḥ_
abhyādāne hi plavate
makāraś caturthīm_
kiṃ sthānam iti_
ubhāv oṣṭhau sthānam_
nādānupradānakaraṇau ca dvisthānam_ [ed. nādāna-, cf. Patyal p. 28]
saṃdhyakṣaram avarṇaleśaḥ kaṇṭhyo yathoktaśeṣaḥ
pūrvo vivṛtakaraṇasthitaś ca
dvitīyaspṛṣṭakaraṇasthitaś ca
na saṃyogo vidyate_
ākhyātopasargānudāttasvaritaliṅgavibhaktivacanāni ca saṃsthānādhyāyina ācāryāḥ pūrve babhūvuḥ
śravaṇād eva pratipadyante na kāraṇaṃ pṛcchanti_
athāparapakṣīyāṇāṃ kaviḥ pañcālacaṇḍaḥ paripṛcchako babhūvāṃbu pṛthagudgīthadoṣān bhavanto bruvantv iti
tad vācy upalakṣayed varṇākṣarapadāṅkaśaḥ_
vibhaktyām ṛṣiniṣevitām iti vācaṃ stuvanti
tasmāt kāraṇaṃ brūmaḥ_
varṇānām ayam idaṃ bhaviṣyatīti
ṣaḍaṅgavidas tat tathādhīmahe
kiṃ chanda iti
gāyatraṃ hi chandaḥ_
gāyatrī vai devānām ekākṣarā śvetavarṇā ca vyākhyātā
dvau dvādaśakau vargau_