Śrīmad-Bhāgavatam · Text 10.87.37
Who is speaking and story frame
न यदिदमग्र आस न भविष्यदतो निधना-
दनुमितमन्तरा त्वयि विभाति मृषैकरसे ।
अत उपमीयते द्रविणजातिविकल्पपथै-
र्वितथमनोविलासमृतमित्यवयन्त्यबुधा: ॥ ३७ ॥
na yad idam agra āsa na bhaviṣyad ato nidhanād
anu mitam antarā tvayi vibhāti mṛṣaika-rase
ata upamīyate draviṇa-jāti-vikalpa-pathair
vitatha-mano-vilāsam ṛtam ity avayanty abudhāḥ
Since this universe did not exist prior to its creation and will no longer exist after its annihilation, we conclude that in the interim it is nothing more than a manifestation imagined to be visible within You, whose spiritual enjoyment never changes. We liken this universe to the transformation of various material substances into diverse forms. Certainly those who believe that this figment of the imagination is substantially real are less intelligent.
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.