GB, 1, 1, 20, 1.0 tasya vakāramātrayāpaś candramasam atharvavedaṃ nakṣatrāṇy om iti svam ātmānaṃ janad ity aṅgirasām ānuṣṭubhaṃ chanda ekaviṃśaṃ stomaṃ dakṣiṇāṃ diśaṃ śaradam ṛtuṃ mano 'dhyātmaṃ jñānaṃ jñeyam itīndriyāṇy anvabhavat //

GB, 1, 1, 30, 4.0 savitarkaṃ jñānamayam ity etaiḥ praśnaiḥ prativacanaiś ca yathārthaṃ padam anuvicintya prakaraṇajño hi prabalo viṣayī syāt sarvasmin vākovākya iti brāhmaṇam //