CHĀNDOGYA UPANISHAD · 8.12.1

मघवन् मर्त्यं वा इदं शरीरम् आत्तं मृत्युना ।
तद् अस्यामृतस्याशरीरस्यात्मनो ऽधिष्ठानम् ।
आत्तो वै सशरीरः प्रियाप्रियाभ्याम् ।
न वै सशरीरस्य सतः प्रियाप्रिययोर् अपहतिर् अस्ति ।
अशरीरं वाव सन्तं न प्रियाप्रिये स्पृशतः ॥

maghavan martyaṃ vā idaṃ śarīram āttaṃ mṛtyunā ।
tad asyāmṛtasyāśarīrasyātmano ’dhiṣṭhānam ।
ātto vai saśarīraḥ priyāpriyābhyām ।
na vai saśarīrasya sataḥ priyāpriyayor apahatir asti ।
aśarīraṃ vāva santaṃ na priyāpriye spṛśataḥ ॥

'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.

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