Chandogya Upanishad (with commentary) · Chapter 2.3

ChUpBh_2,2.3 upāsanaphalaṃ-kalpante samarthā bhavanti hāsmai lokā ūrdhvāścā'vṛttāśca gatyāgativiśiṣṭā bhogyatvena vyavatiṣṭhanta ityarthaḥ /
ya etadevaṃ vidvāṃllokeṣu pañcavidhaṃ samastaṃ sādhu sāmetyupāsta iti sarvatra yojanā pañcavidhe saptavidhe ca //3//
iti chāndogyopaniṣadi dvitīyādhyāyasya dvitīyaḥ khaṇḍaḥ
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START ChUp 2,3.1
vṛṣṭau pañcavidhaṃ sāmopāsīta |
purovāto hiṅkāraḥ |
megho jāyate sa prastāvaḥ |
varṣati sa udgīthaḥ |
vidyotate stanayati sa pratihāraḥ

ChUpBh_2,3.1 vṛṣṭau pañcavidhaṃ sāmopāsīta /
lokasthitervṛṣṭinimittatvādānantaryam /
purovāto hiṅkāraḥ /
purovātādyudgrahaṇāntā hi vṛṣṭiḥ /
yathā sāma hiṅkārādinidhanāntam /
ataḥ purovāto hiṅkāraḥ /
prāthamyāt /
megho jāyate sa prastāvaḥ /
prāvṛṣi meghajanane vṛṣṭeḥ prastāva iti hi prasiddhiḥ /
varṣati sa udgīthaḥ śraiṣṭhyāt /
vidyotate stanayati sa pratihāraḥ /
pratihṛtatvāt //1 //
START ChUp 2,3.2
udgṛhṇāti tan nidhanaṃ varṣayati ha ya etad evaṃ vidvān vṛṣṭau pañcavidhaṃ sāmopāste