CHĀNDOGYA UPANISHAD · 1.7.6
स एष ये चैतस्माद् अर्वाञ्चो लोकास् तेषां चेष्टे मनुष्यकामानां चेति ।
तद् य इमे वीणायां गायन्त्य् एतं ते गायन्ति ।
तस्मात् ते धनसनयः ॥
sa eṣa ye caitasmād arvāñco lokās teṣāṃ ceṣṭe manuṣyakāmānāṃ ceti ।
tad ya ime vīṇāyāṃ gāyanty etaṃ te gāyanti ।
tasmāt te dhanasanayaḥ ॥
He is lord of the worlds beneath that (the self in the eye), and of all the wishes of men. Therefore all who sing to the vînâ (lyre), sing him, and from him also they obtain wealth.
F. Max Müller · The Upanishads, Sacred Books of the East 1 (1879)