Śrīmad-Bhāgavatam · Text 1.5.20
Who is speaking and story frame
इदं हि विश्वं भगवानिवेतरो
यतो जगत्स्थाननिरोधसम्भवा: ।
तद्धि स्वयं वेद भवांस्तथापि ते
प्रादेशमात्रं भवत: प्रदर्शितम् ॥ २० ॥
idaṁ hi viśvaṁ bhagavān ivetaro
yato jagat-sthāna-nirodha-sambhavāḥ
tad dhi svayaṁ veda bhavāṁs tathāpi te
prādeśa-mātraṁ bhavataḥ pradarśitam
The Supreme Lord Personality of Godhead is Himself this cosmos, and still He is aloof from it. From Him only has this cosmic manifestation emanated, in Him it rests, and unto Him it enters after annihilation. Your good self knows all about this. I have given only a synopsis.
Read Śrīla Prabhupāda's purport on Vedabase.io