Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 47
Sanskrit:
श्रीगुरुरुवाचसम्यक् सम्पादितो वत्स भवद्भयां गुरुनिष्क्रय: ।को नु युष्मद्विधगुरो: कामानामवशिष्यते ॥ ४७ ॥
ITRANS:
śrī-gurur uvācasamyak sampādito vatsabhavadbhyāṁ guru-niṣkrayaḥko nu yuṣmad-vidha-guroḥkāmānām avaśiṣyate
Translation:
The spiritual master said: My dear boys, You two have completely fulfilled the disciple’s obligation to reward his spiritual master. Indeed, with disciples like You, what further desires could a guru have?