Chandogya Upanishad 8.54

मघवन्मर्त्यं वा इदꣳ शरीरमात्तं मृत्युना तदस्यामृतस्याशरीरस्यात्मनोऽधिष्ठानमात्तो वै सशरीरः प्रियाप्रियाभ्यां न वै सशरीरस्य सतः प्रियाप्रिययोरपहतिरस्त्यशरीरं वाव सन्तं न प्रियाप्रिये स्पृशतः ॥ १ ॥

8.12.1 — maghavanmartyam va idam shariramattam mrityuna tadasyamritasyasharirasyatmano'dhishthanamatto vai sasharirah priyapriyabhyam na vai sasharirasya satah priyapriyayorapahatirastyashariram vava santam na priyapriye sprishatah || 1 ||

'Maghavat, this body is mortal and always held by death. It is the abode of that Self which is ​immortal and without body. When in the body (by thinking this body is I and I am this body) the Self is held by pleasure and pain. So long as he is in the body, he cannot get free from pleasure and pain. But when he is free of the body (when he knows himself different from the body), then neither pleasure nor pain touches him.

'मघवन्, यह शरीर मर्त्य है, मृत्यु से आक्रान्त है; यह उस अमृत, अशरीर आत्मा का अधिष्ठान है। शरीरयुक्त जब होता है तब प्रिय-अप्रिय से आक्रान्त रहता है; शरीरयुक्त के प्रिय-अप्रिय का अपहरण (मुक्ति) नहीं होता। परन्तु अशरीर स्थित को प्रिय-अप्रिय स्पर्श नहीं करते।'