Gopathabrahmana 1.1.6

1.1.6

sa bhūyo 'śrāmyad bhūyo 'tapyad bhūya ātmānaṃ samatapat
sa ātamata eva trīṃl lokān niramimīta pṛthivīm antarikṣaṃ divam iti
sa khalu pādābhyām eva pṛthivīṃ nirmamimīta_
udarād antarikṣaṃ mūrdhno divam_
sa tāṃs trīṃl lokān abhyaśrāmyad abhyatapat samatapat
tebhyaḥ śrāntebhyas taptebhyaḥ saṃtaptebhyas trīn devān niramimīta_
agniṃ vāyum ādityam iti
sa khalu pṛthivyā evāgniṃ niramimītāntarikṣād vāyuṃ diva ādityam_
sa tāṃs trīn devān abhyaśrāmyad abhyatapat samatapat
tebhyaḥ śrāntebhyas taptebhyaḥ saṃtaptebhyas trīn vedān niramimīta ṛgvedaṃ yajurvedaṃ sāmavedam iti_
agner ṛgvedaṃ vāyor yajurvedaṃ ādityāt sāmavedam
sa tāṃs trīn vedān abhyaśrāmyad abhyatapat samatapat
tebhyaḥ śrāntebhyas taptebhyaḥ saṃtaptebhyas tisro mahāvyāhṛtīr niramimīta bhūr bhuvaḥ svar iti
bhūr ity ṛgvedād bhuva iti yajurvedāt svar iti sāmavedāt
sa ya icchet sarvair etais tribhir vedaiḥ kurvīyety etābhir eva tan mahāvyāhṛtibhiḥ kurvīta
sarvair ha vā asyaitais tribhir vedaiḥ kṛtaṃ bhavati ya evaṃ veda yaś caivaṃvidvān evam etābhir mahāvyāhṛtibhiḥ kurute || 6 ||