Śrīmad-Bhāgavatam · Text 12.4.25
Who is speaking and story frame
बुद्धेर्जागरणं स्वप्न: सुषुप्तिरिति चोच्यते ।
मायामात्रमिदं राजन् नानात्वं प्रत्यगात्मनि ॥ २५ ॥
buddher jāgaraṇaṁ svapnaḥ
suṣuptir iti cocyate
māyā-mātram idaṁ rājan
nānātvaṁ pratyag-ātmani
The three states of intelligence are called waking consciousness, sleep and deep sleep. But, my dear King, the variegated experiences created for the pure living entity by these different states are nothing more than illusion.
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.