Śrīmad-Bhāgavatam · Text 11.13.27
Who is speaking and story frame
जाग्रत् स्वप्न: सुषुप्तं च गुणतो बुद्धिवृत्तय: ।
तासां विलक्षणो जीव: साक्षित्वेन विनिश्चित: ॥ २७ ॥
jāgrat svapnaḥ suṣuptaṁ ca
guṇato buddhi-vṛttayaḥ
tāsāṁ vilakṣaṇo jīvaḥ
sākṣitvena viniścitaḥ
Waking, sleeping and deep sleep are the three functions of the intelligence and are caused by the modes of material nature. The living entity within the body is ascertained to possess characteristics different from these three states and thus remains as a witness to them.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.