Chāndogya Upaniṣad 8.10.1

8.10.1

ya eṣa svapne mahīyamānaś caraty eṣa ātmeti ha uvāca \
etad amṛtam abhayam etad brahmeti \
sa ha śāntahṛdayaḥ pravavrāja \
sa hāprāpyaiva devān etad bhayaṃ dadarśa \
tad yadyappīdaṃ śarīram andhaṃ bhavaty anandhaḥ sa bhavati yadi srāmam asrāmaḥ \
naivaiṣo 'sya doṣeṇa duṣyati \\810.1\

1. 'He who moves about happy in a dream—he is the Self (Ātman),' said he. 'That is the immortal, the fearless. That is Brahma.' Then with tranquil heart he [i.e. Indra] went forth. Then, even before reaching the gods, he saw this danger: 'Now, even if this body is blind, that one [i.e. the Self, Ātman] is not blind. If this is lame, he is not lame. Indeed, he does not suffer defect through defect of this. He is not slain with one's murder. He is not lame with one's lameness. Nevertheless, as it were (iva), they kill him; as it were, they unclothe him; as it were, he comes to experience what is unpleasant; as it were, he even weeps. I see nothing enjoyable in this.’