CHĀNDOGYA UPANISHAD · 8.12.3

एवम् एवैष संप्रसादो ऽस्माच् छरीरात् समुत्थाय परं ज्योतिर् उपसंपद्य स्वेन रूपेणाभिनिष्पद्यते ।
स उत्तमपुरुषः ।
स तत्र पर्येति जक्षत् क्रीडन् रममाणः स्त्रीभिर् वा यानैर् वा ज्ञातिभिर् वा नोपजनं स्मरन्न् इदं शरीरम् ।
स यथा प्रयोग्य आचरणे युक्त एवम् एवायम् अस्मिञ् छरीरे प्राणो युक्तः ॥

evam evaiṣa saṃprasādo ’smāc charīrāt samutthāya paraṃ jyotir upasaṃpadya svena rūpeṇābhiniṣpadyate ।
sa uttamapuruṣaḥ ।
sa tatra paryeti jakṣat krīḍan ramamāṇaḥ strībhir vā yānair vā jñātibhir vā nopajanaṃ smarann idaṃ śarīram ।
sa yathā prayogya ācaraṇe yukta evam evāyam asmiñ charīre prāṇo yuktaḥ ॥

'Thus does that serene being, arising from this body, appear in its own form, as soon as it has approached the highest light (the knowledge of Self ) He (in that state) is the highest person (uttama pûrusha). He moves about there laughing (or eating), playing, and rejoicing (in his mind), be it with women, carriages, or relatives, never minding that body into which he was born. 'Like as a horse attached to a cart, so is the spirit (prâna, pragñâtman) attached to this body.

F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)