Srimad Bhagavatam Canto 10, Chapter 51, Text 55

SB 10.51.55

na kamaye ’nyam tava pada-sevanad
 akiñcana-prarthyatamad varam vibho
aradhya kas tvam hy apavarga-dam hare
 vrnita aryo varam atma-bandhanam
 
Translation: 
 
O all-powerful one, I desire no boon other than service to Your lotus feet, the boon most eagerly sought by those free of material desire. O Hari, what enlightened person who worships You, the giver of liberation, would choose a boon that causes his own bondage?
 
Purport: 
 
The Lord offered Mucukunda anything he desired, but Mucukunda desired only the Lord. This is pure Krsna consciousness.
Srimad Bhagavatam Canto 10, Chapter 51, Text 54
Srimad Bhagavatam Canto 10, Chapter 51, Text 56