Madhvaon Brahma Sūtra 4.4.13
Dvaita Vedānta
Sūtra
तन्वभावे संध्यवदुपपत्तेः
tanvabhāve saṃdhyavadupapatteḥ
Sūtra translation
In the absence of m external body, it (the experience or enjoyment) may arise as in the Smdhya (the state of dreaming).
Sandhya is the state of dreaming as may be seen from the explanation given in the Sruti: “ Sandhya is the third state, viz, of dreaming” (Bri. VI-3-9). *