Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 16
Sanskrit:
एवं शप्त: स्वगुरुणा सत्यान्न चलितो महान् ।वामनाय ददावेनामर्चित्वोदकपूर्वकम् ॥ १६ ॥
ITRANS:
evaṁ śaptaḥ sva-guruṇāsatyān na calito mahānvāmanāya dadāv enāmarcitvodaka-pūrvakam
Translation:
Śukadeva Gosvāmī continued: Even after being cursed in this way by his own spiritual master, Bali Mahārāja, being a great personality, never deviated from his determination. Therefore, according to custom, he first offered water to Vāmanadeva and then offered Him the gift of land he had promised.