Śrīmad-Bhāgavatam 10.82.45-46

"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."

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"In this way all created things reside within the basic elements of creation, while the spirit souls pervade the creation, remaining in their own true identity. You should see both of these — the material creation and the self — as manifest within Me, the imperishable Supreme Truth."

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https://vedy.online/en/sb10/82/45 & https://vedy.online/en/sb10/82/46