योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-210, verse-23

कस्तत्र नाम देहोऽयं कस्यैते स्वप्नधीः क्व वा ।
स्वप्नेन ज्ञावबुद्धेन भ्रमेणाज्ञोऽवबोध्यते ॥ २३ ॥

kastatra nāma deho'yaṃ kasyaite svapnadhīḥ kva vā ,
svapnena jñāvabuddhena bhrameṇājño'vabodhyate 23

23. What is thing then we call the body, and how does it appear into us in the shape of something in our dream; and why doth anything appearing as a reality in dream, appear as nothing and vanish as an error upon our waking.