Srimad Bhagavatam Canto 10, Chapter 88, Text 16

SB 10.88.16

dasasya-banayos tustah
 stuvator vandinor iva
aisvaryam atulam dattva
 tata apa su-sankatam
 
Translation: 
 
He became pleased with ten-headed Ravana, and also with Bana, when they each chanted his glories, like bards in a royal court. Lord Siva then bestowed unprecedented power upon each of them, but in both cases he was consequently beset with great difficulty.
 
Purport: 
 
Ravana worshiped Lord Siva to gain power and then misused that power to uproot the lord’s residence, sacred Kailasa-parvata. On Banasura’s request, Lord Siva agreed to personally guard Bana’s capital, and later he had to fight for Bana against Sri Krsna and His sons.
Srimad Bhagavatam Canto 10, Chapter 88, Text 15
Srimad Bhagavatam Canto 10, Chapter 88, Text 17