Srimad Bhagavatam Canto 06, Chapter 07, Text 37

SB 6.7.37

tathapi na pratibruyam
 gurubhih prarthitam kiyat
bhavatam prarthitam sarvam
 pranair arthais ca sadhaye
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
All of you are my superiors. Therefore although accepting priesthood is sometimes reproachable, I cannot refuse even a small request from you. I agree to be your priest. I shall fulfill your request by dedicating my life and possessions.
Srimad Bhagavatam Canto 06, Chapter 07, Text 36
Srimad Bhagavatam Canto 06, Chapter 07, Text 38