Śrīmad-Bhāgavatam · Text 10.47.31
Who is speaking and story frame
आत्मा ज्ञानमय: शुद्धो व्यतिरिक्तोऽगुणान्वय: ।
सुषुप्तिस्वप्नजाग्रद्भिर्मायावृत्तिभिरीयते ॥ ३१ ॥
ātmā jñāna-mayaḥ śuddho
vyatirikto ’guṇānvayaḥ
suṣupti-svapna-jāgradbhir
māyā-vṛttibhir īyate
Being composed of pure consciousness, or knowledge, the soul is distinct from everything material and is uninvolved in the entanglements of the modes of nature. We can perceive the soul through the three functions of material nature known as wakefulness, sleep and deep sleep.
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.