Srimad Bhagavatam Canto 10, Chapter 76, Text 12

SB 10.76.12

ity ardyamana saubhena
 krsnasya nagari bhrsam
nabhyapadyata sam rajams
 tri-purena yatha mahi
 
Translation: 
 
Thus terribly tormented by the airship Saubha, Lord Krsna’s city had no peace, O King, just like the earth when it was attacked by the three aerial cities of the demons.
Srimad Bhagavatam Canto 10, Chapter 76, Text 09-11
Srimad Bhagavatam Canto 10, Chapter 76, Text 13