Srimad Bhagavatam Canto 10, Chapter 34, Text 11

SB 10.34.11

ko bhavan paraya laksmya
 rocate ’dbhuta-darsanah
katham jugupsitam etam
 gatim va prapito ’vasah
 
Translation: 
 
[Lord Krsna said:] My dear sir, you appear so wonderful, glowing with such great beauty. Who are you? And who forced you to assume this terrible body of a snake?
Srimad Bhagavatam Canto 10, Chapter 34, Text 10
Srimad Bhagavatam Canto 10, Chapter 34, Text 12-13