Srimad Bhagavatam Canto 11, Chapter 23, Text 58

SB 11.23.58

sri-bhagavan uvaca
nirvidya nasta-dravine gata-klamah
 pravrajya gam paryatamana ittham
nirakrto ’sadbhir api sva-dharmad
 akampito ’mum munir aha gatham
 
Translation: 
 
Lord Sri Krsna said: Thus becoming detached upon the loss of his property, this sage gave up his moroseness. He left home, taking sannyasa, and began to travel about the earth. Even when insulted by foolish rascals he remained unswerved from his duty and chanted this song.
 
Purport: 
 
Those becoming free from the materialistic way of life, which involves grueling austerities performed to acquire money, may chant the preceding song of the Vaisnava sannyasi. Srila Bhaktisiddhanta Sarasvati Thakura states that if one is not capable of listening to the song of this sannyasi, then one will certainly remain an obedient servant of material illusion.
Srimad Bhagavatam Canto 11, Chapter 23, Text 57
Srimad Bhagavatam Canto 11, Chapter 23, Text 59