Atharvaveda 7.74: sūktaṃ 7.074(7.071)

7.74.1

pari tvāgne puraṃ vayaṃ vipraṃ sahasya dhīmahi .
dhṛṣadvarṇaṃ divedive hantāraṃ bhaṅgurāvataḥ ..1..