Passage
Brhadaranyaka Upanisad brhup_4,5.15
san brihadaranyaka
yatra hi dvaitam iva bhavati tad itara itaraṃ paśyati tad itara itaraṃ jighrati tad itara itaraṃ rasayate tad itara itaram abhivadati tad itara itaraṃ śṛṇoti tad itara itaraṃ manute tad itara itaraṃ spṛśati tad itara itaraṃ vijānāti / yatra tv asya sarvam ātmaivābhūt tat kena kaṃ paśyet tat kena kaṃ jighret tat kena kaṃ rasayet tat kena kam abhivadet tat kena kaṃ śṛṇuyāt tat kena kaṃ manvīta tat kena kaṃ spṛśet tat kena kaṃ vijānīyāt / yenedaṃ sarvaṃ vijānāti taṃ kena vijānīyāt / sa eṣa neti nety ātmā / agṛhyo na hi gṛhyate / aśīryo na hi śīryate / asaṅgo na hi sajyate / asito na vyathate na riṣyati / vijñātāram are kena vijānīyād ity uktānuśāsanāsi maitreyi / etāvad are khalv amṛtatvam iti hoktvā yājñavalkyo vijahāra