Srimad Bhagavatam Canto 10, Chapter 15, Text 41

SB 10.15.41

krsnah kamala-patraksah
 punya-sravana-kirtanah
stuyamano ’nugair gopaih
 sagrajo vrajam avrajat
 
Translation: 
 
Then lotus-eyed Lord Sri Krsna, whose glories are most pious to hear and chant, returned home to Vraja with His elder brother, Balarama. Along the way, the cowherd boys, His faithful followers, chanted His glories.
 
Purport: 
 
When the glories of Sri Krsna are vibrated, both the speakers and the hearers are purified and become pious.
Srimad Bhagavatam Canto 10, Chapter 15, Text 40
Srimad Bhagavatam Canto 10, Chapter 15, Text 42