योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-210, verse-22

स्वप्नस्तवानुभूतार्थस्तेनातस्त्वं प्रबोध्यसे ।
न तु सर्गे चिदाभाते सादृश्यं स्वप्नभस्मना ॥ २२ ॥

svapnastavānubhūtārthastenātastvaṃ prabodhyase ,
na tu sarge cidābhāte sādṛśyaṃ svapnabhasmanā 22

22. But the difference between thy dream or vision and spectrum of Brahma, consist in the former representing the figures of thy previous thoughts alone, which disperse and vanish upon thy waking; but the universe which is exhibited in spectrum of Brahma, is not so evanescent as that of other.