Śrīmad-Bhāgavatam · Text 10.80.41
Who is speaking and story frame
एतदेव हि सच्छिष्यै: कर्तव्यं गुरुनिष्कृतम् ।
यद् वै विशुद्धभावेन सर्वार्थात्मार्पणं गुरौ ॥ ४१ ॥
etad eva hi sac-chiṣyaiḥ
kartavyaṁ guru-niṣkṛtam
yad vai viśuddha-bhāvena
sarvārthātmārpaṇaṁ gurau
This indeed is the duty of all true disciples: to repay the debt to their spiritual master by offering him, with pure hearts, their wealth and even their very lives.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.