Madhvaon Brahma Sūtra 3.2.7
Dvaita Vedānta
Sūtra
तदभावोनाडीषु तच्छ्रुतेरात्मनि ह
tadabhāvonāḍīṣu tacchruterātmani ha
Sūtra translation
Their absence (i.e., the absence of the two aforesaid states, dreams and wakefulness) takes place in the Lord in the Nadis, according to the sruti (and the well-known reference).
The state of sleep which is the absence of wakeful- ness and dreams, is brought about within the Lord presept in the Nadis. For the scriptural passages say, “ Then (in sleep) in these Nadis (in the Susliumna), the soul is come ” (Ch. VIII., 6. 3) “ O dear one, during the state of sleep, this person (soul) comes to be with Sat (the Supreme Lord)” (Ch. Vj. 8. 1).