Chandogya Upanishad (with commentary) · Chapter 7.23

ChUpBh_7,22.1 sāpi kṛtiryadā sukhaṃ labhate sukhaṃ niratiśayaṃ vakṣyamāṇaṃ labdhavyaṃ mayeti manyate tadā bhavatītyarthaḥ /
yathā dṛṣṭaphalasukhā kṛtistathehāpi nāsukhaṃ labdhvā karoti /
bhaviṣyadapi phalaṃ labdhvetyucyate /
taduddiśya pravṛttyupapatteḥ /
athedānīṃ kṛtyādiṣūttarottareṣu satsu satyaṃ svayameva pratibhāsata iti na tadvijñānāya pṛthagyatnaḥ kārya iti prāptaṃ tata idamucyate /
sukhaṃ tveva vijijñāsitavyamityādi /
sukhaṃ bhagavo vijijñāsa ityabhimukhībhūtāyā'ha //1//
iti cchāndogyopaniṣadi saptamādhyāyasya dvāviṃśaḥ khaṇḍaḥ
START ChUp 7,23.1
yo vai bhūmā tat sukham |
nālpe sukham asti |
bhūmaiva sukham |
bhūmā tv eva vijijñāsitavya iti |
bhūmānaṃ bhagavo vijijñāsa iti