Bhagavatapurana 10.1.41

10.1.41

svapne yathā paśyati deham īdṛśaṃ manorathenābhiniviṣṭa-cetanaḥ /
dṛṣṭa-śrutābhyāṃ manasānucintayan prapadyate tat kim api hy apasmṛtiḥ //

41. Just as in a dream a person perceives a body similar to this by virtue of his intellectual faculty that is strongly coloured with the fancies in relation to what is seen and what is heard in the waking hours, so also a person, constantly thinking of something that is heard, attains to it, forgetful of his previous state (or body).