Chāndogya Upaniṣad 2.22.2

2.22.2

amṛtatvaṃ devebhya āgāyānīty āgāyet \
svadhāṃ pitṛbhya āśāṃ manuṣyebhyas tṛṇodakaṃ paśubhyaḥ svargaṃ lokaṃ yajamānāyānnam ātmana āgāyānīty etāni manasā dhyāyann apramattaḥ stuvīta \\222.2\

2. ‘Let me obtain immortality for the gods by singing’—thus should one obtain with his singing. ‘Let me obtain oblation for the fathers by singing, hope for men, grass and water for cattle, a heavenly world for the sacrificer, food for myself (*ātman*)’—one should sing the Stotra carefully, meditating these things in mind.