Kaṭha Upaniṣad 4.3

4.3

"yatra nānyat paśyati nānyacchṛṇoti nānyadvijānāti" iti svātiriktavastutaddarśanaśravaṇavedanāpahnavaśruteḥ na cādityadevatāko'yaṃ mantra iti vācyam ; ādityasyāpi brahmatvāt "asāvādityo brahma" iti śruteḥ | asallaukikādyaṣṭadṛṣṭimohe satyasati aviśeṣeṇa niṣpratiyogikabrahmamātramavaśiṣyata ityetāvatā granthenābhihitam | tadadhigamopāyavairalyāmāśaṅkya-yadi te brahmayāthātmyājñānamasti tadā tadadhigamopāya ucyate--ūrdhvaṃ iti | yo'ntaryāmī ¹sarveśvaraḥ hṛtkamalāt ūrdhvaṃ prāṇavṛttiṃ unnayati tathā apānavṛttiṃ pratyak adho asyati pātayati, hṛdayapuṇḍarīkamadhye samāsīnaṃ taṃ svāntaḥkaraṇābhivyaktavijñānasaṅgāsaṅgajīvaprāṇeśvarapratyagrūpeṇa vananīyaṃ saṃbhajanīyaṃ vāmanaṃ viśa iva rājānaṃ sarve viśvedevāḥ cakṣurādayaśca tattatkaraṇajanitavijñānabaliṃ harantaḥ santa upāsate tādarthyenāviralavyāpārā bhavantītyarthaḥ | ²manaādikaraṇagrāmavyāpṛtiryadarthā so'yamātmā sarvavailakṣaṇyena siddho bhavatītyarthaḥ |