Kaushitakopanishad 3.2

3.2

sa hovāca prāṇo'smi prajñātmānaṃ māmāyuramṛtamityupāsvāyuḥ prāṇaḥ prāṇo vā āyurryāvaddhayasmiṃñcharīre
prāṇo vasati tāvadāyaḥ prāṇena hyevāsmiṃlloke'mṛtatvamāpnoti prajñayā satyaṃ saṅkalpaṃ sa yo †māmāyuramṛtamityupāste sarvamāyurasmiṃlloka ityāpnotyamṛtatvamakṣitiṃ svarge loke taddhaika āhurekabhūyaṃ vai prāṇā gacchantīti na hi kañcana śaknuyāt sakṛdvācā nāma prajñāpayituṃ cakṣuṣā rūpaṃ śrotreṇa śabdaṃ manasā dhyānamekabhūyaṃ vai prāṇā †bhūtvaikaikametāni sarvāṇi prajñāpayantīti
vācaṃ vadantīṃ sarve prāṇā anuvadanti cakṣuḥ paśyat sarve
prāṇā anupaśyanti śrocaṃ śṭaṇvat sarve prāṇā anuśṭaṇvanti mano dhyāyat sarve prāṇā anudhyāyanti prāṇaṃ
prāṇantaṃ sarve prāṇā anuprāṇanti evamu haitaditi hendra
uvācāsti tveva prāṇānāṃ niḥśreyasamiti