Śrīmad-Bhāgavatam 11.13.32

"While awake the living entity enjoys with all of his senses the fleeting characteristics of the material body and mind; while dreaming he enjoys similar experiences within the mind; and in deep dreamless sleep all such experiences merge into ignorance. By remembering and contemplating the succession of wakefulness, dreaming and deep sleep, the living entity can understand that he is one throughout the three stages of consciousness and is transcendental. Thus, he becomes the lord of the senses."

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https://vedy.online/en/sb11/13/32