Srimad Bhagavatam Canto 11, Chapter 22, Text 27

SB 11.22.27

evam me pundarikaksa
 mahantam samsayam hrdi
chettum arhasi sarva-jña
 vacobhir naya-naipunaih
 
Translation: 
 
O lotus-eyed Krsna, O omniscient Lord, kindly cut this great doubt out of my heart with Your own words, which exhibit Your great skill in reasoning.
 
Purport: 
 
Sri Uddhava requests Lord Krsna to clearly demonstrate the difference between the material body and the spirit soul.
Srimad Bhagavatam Canto 11, Chapter 22, Text 26
Srimad Bhagavatam Canto 11, Chapter 22, Text 28