Bhagavatapurana 6.16.53

6.16.53

yathā suṣuptaḥ puruṣo viśvaṃ paśyati cātmani /
ātmānamekadeśasthaṃ manyate svapna utthitaḥ //

53. & 54. Just as a sleeping person sees the whole Universe in himself and after waking thinks that Atman he is at some one point of space, thus wakefulness and other states are the conditions of the Jiva and in relation to Atman they are all mere products of Maya. Having realised this, one should think Paramatman to be their mere witness.