योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-42, verse-2

चित्तदीपे गते यान्ति भ्रान्तिवद्भान्ति खे स्थिते ।
रूपालोकमनस्कारसंविदोऽम्बुद्रवोर्मयः ॥ २ ॥

cittadīpe gate yānti bhrāntivadbhānti khe sthite ,
rūpālokamanaskārasaṃvido'mbudravormayaḥ 2

2. The lighted lamp of the understanding being extinguished, the erroneous conceptions of the world vanishes into the air; and the ocular vision and mental operations, are as undulations of consciousness.