Śrīmad-Bhāgavatam · Text 10.82.45
Who is speaking and story frame
अहं हि सर्वभूतानामादिरन्तोऽन्तरं बहि: ।
भौतिकानां यथा खं वार्भूर्वायुर्ज्योतिरङ्गना: ॥ ४५ ॥
ahaṁ hi sarva-bhūtānām
ādir anto ’ntaraṁ bahiḥ
bhautikānāṁ yathā khaṁ vār
bhūr vāyur jyotir aṅganāḥ
Dear ladies, I am the beginning and end of all created beings and exist both within and without them, just as the elements ether, water, earth, air and fire are the beginning and end of all material objects and exist both within and without them.
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.