Śrīmad-Bhāgavatam · Text 11.13.23
Who is speaking and story frame
पञ्चात्मकेषु भूतेषु समानेषु च वस्तुत: ।
को भवानिति व: प्रश्नो वाचारम्भो ह्यनर्थक: ॥ २३ ॥
pañcātmakeṣu bhūteṣu
samāneṣu ca vastutaḥ
ko bhavān iti vaḥ praśno
vācārambho hy anarthakaḥ
If by asking Me “Who are You?” you were referring to the material body, then I must point out that all material bodies are constituted of five elements, namely earth, water, fire, air and ether. Thus, you should have asked, “Who are you five?” If you consider that all material bodies are ultimately one, being constituted essentially of the same elements, then your question is still meaningless, since there would be no deep purpose in distinguishing one body from another. Thus, it appears that in asking My identity, you are merely speaking words, without any real meaning or purpose.
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.