Srimad Bhagavatam Canto 06, Chapter 02, Text 14

SB 6.2.14

sanketyam parihasyam va
 stobham helanam eva va
vaikuntha-nama-grahanam
 asesagha-haram viduh
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
One who chants the holy name of the Lord is immediately freed from the reactions of unlimited sins, even if he chants indirectly [to indicate something else], jokingly, for musical entertainment, or even neglectfully. This is accepted by all the learned scholars of the scriptures.
Srimad Bhagavatam Canto 06, Chapter 02, Text 13
Srimad Bhagavatam Canto 06, Chapter 02, Text 15