Śrīmad-Bhāgavatam · Text 2.10.7
Who is speaking and story frame
आभासश्च निरोधश्च यतोऽस्त्यध्यवसीयते ।
स आश्रय: परं ब्रह्म परमात्मेति शब्द्यते ॥ ७ ॥
ābhāsaś ca nirodhaś ca
yato ’sty adhyavasīyate
sa āśrayaḥ paraṁ brahma
paramātmeti śabdyate
The supreme one who is celebrated as the Supreme Being or the Supreme Soul is the supreme source of the cosmic manifestation as well as its reservoir and winding up. Thus He is the Supreme Fountainhead, the Absolute Truth.
Read Śrīla Prabhupāda's purport on Vedabase.io