Kaṭha Upaniṣad 2.24-2.p12

2.24-2.p12

nanu evamapi odana śabdena kimiti vināśyatvaṃ lakṣyate? gauṇatvamapi śabdasya sādhāraṇaguṇamapahāya asādhāraṇaguṇenaiva nirvāhyam | nahi agnirmāṇavakaḥ ityatra agniśabdena, paiṅgalyāderiva dravyatvādeḥ upasthitiḥ asti | ata eva praitu hotuścamasaḥ pra brahmaṇaḥ prodgātṛṇāṃ pra yajamānasya (pra.mī.3-5-7) iti adhvaryupraiṣe udgātṛśabdasya bahuvacanānurodhena bahuṣu vṛttau vaktavyāyām, ṣoḍaśartviksādhāraṇākāraṃ vihāya1, udgātṛgaṇamātralakṣaṇā, pūrvatantre (3-5-7) varṇitā | tadvadihāpi2 brahmakṣatravākye pratīyate iti cet;