Bhagavata Purana 11.13.32
Srimad Bhagavatam · 13 · Verse 32
Sanskrit Original
यो जागरे बहिरनुक्षणधर्मिणोऽर्थान् भुङ्क्ते समस्तकरणैर्हृदि तत्सदृक्षान् । स्वप्ने सुषुप्त उपसंहरते स एक: स्मृत्यन्वयात्त्रिगुणवृत्तिदृगिन्द्रियेश: ॥ ३२ ॥
yo jāgare bahir anukṣaṇa-dharmiṇo ’rthān bhuṅkte samasta-karaṇair hṛdi tat-sadṛkṣān svapne suṣupta upasaṁharate sa ekaḥ smṛty-anvayāt tri-guṇa-vṛtti-dṛg indriyeśaḥ
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.