Gopathabrahmana 1.1.9

1.1.9

sa ūrdhvo 'tiṣṭhat
sa imāṃl lokān vyaṣṭabhnāt
tasmād aṅgiraso 'dhīyāna ūrdhvas tiṣṭhati
tad vrataṃ sa manasā dhyāyed yad vā ahaṃ kiṃ ca manasā dhyāsyāmi tathaiva tad bhaviṣyati [ed.: yed]
tad dha sma tathaiva bhavati
tad apy etad ṛcoktam_
śreṣṭho ha vedas tapaso 'dhi jāto brahmajyānāṃ kṣitaye saṃbabhūva |
ṛjyad bhūtaṃ yad asṛjyatedaṃ niveśanam anṛṇaṃ dūram asyeti [ed.: ṛcy ṛgbhūtaṃ - see note Patyal]
tā vā etā aṅgirasāṃ jāmayo yan menayaḥ
karoti menibhir vīryaṃ ya evaṃ veda || 9 ||