Srimad Bhagavatam Canto 10, Chapter 14, Text 05

SB 10.14.5

pureha bhuman bahavo ’pi yoginas
tvad-arpiteha nija-karma-labdhaya
vibudhya bhaktyaiva kathopanitaya
prapedire ’ñjo ’cyuta te gatim param
 
Translation: 
 
O almighty Lord, in the past many yogis in this world achieved the platform of devotional service by offering all their endeavors unto You and faithfully carrying out their prescribed duties. Through such devotional service, perfected by the processes of hearing and chanting about You, they came to understand You, O infallible one, and could easily surrender to You and achieve Your supreme abode.
Srimad Bhagavatam Canto 10, Chapter 14, Text 03
Srimad Bhagavatam Canto 10, Chapter 14, Text 06