Yāska's Nirukta 319.9

319.9

na taṃ vidyayā viduṣo yamevaṃ vidvāṃso vadantyakṣaraṃ brahmaṇaspatimanyadyuṣmākamantaramanyadeṣāmantaraṃ babhūveti nīhāreṇa prāvṛtāstamasā jalpyā cāsutṛpa ukthaśāsaḥ prāṇaṃ sūrya yatpathagāminaścarantyavidvāṃsaḥ kṣetrajñamanupravadantyathāho vidvāṃsaḥ kṣetrajño'nukalpate tasya tapasā sahāpramādametyathābhavyo bhavati tenāsantatamicchettena sakhyamicchedèṣa hi sakhā śreṣṭhaḥ sañjānāti bhūtaṃ bhavadbhaviṣyaditi | jñātā kasmājjñāyateḥ, sakhā kasmāt sakhyateḥ, saha bhūtendriyaiḥ śerate mahābhūtāni sendriyāṇi, prajñayā karma kārayatīti vā, tasya yadāpaḥ pratiṣṭhāśīlamupaśama ātmā brahmati sa brahmabhūto bhavati sākṣimātro vyavatiṣṭhate'bandho jñānakṛtaḥ |