Srimad-Bhagavatam: Canto 9 - Chapter 1 - Verse 45

Sanskrit:

यो मामतिथिमायातमातिथ्येन निमन्‍त्र्य च ।अदत्त्वा भुक्तवांस्तस्य सद्यस्ते दर्शये फलम् ॥ ४५ ॥

ITRANS:

yo mām atithim āyātamātithyena nimantrya caadattvā bhuktavāṁs tasyasadyas te darśaye phalam

Translation:

Mahārāja Ambarīṣa, you have invited me to eat as a guest, but instead of feeding me, you yourself have eaten first. Because of your misbehavior, I shall show you something to punish you.

Purport:

A devotee cannot be defeated by a so-called mystic yogī. This will be proved by the failure of Durvāsā Muni’s endeavor to chastise Mahārāja Ambarīṣa. Harāv abhaktasya kuto mahad-guṇāḥ (Bhāg. 5.18.12). One who is not a pure devotee of the Supreme Lord has no good qualifications, however great a mystic, philosopher or fruitive worker he may be. Only a devotee emerges victorious in all circumstances, as will be shown in this incident involving the rivalry between Durvāsā and Mahārāja Ambarīṣa.