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SB 9.4.45

yo mām atithim āyātam
 ātithyena nimantrya ca
adattvā bhuktavāṁs tasya
 sadyas te darśaye phalam
Synonyms: 
yaḥ — this man who; mām — unto me; atithim — who, being an uninvited guest; āyātam — had come here; ātithyena — with the reception of a guest; nimantrya — after inviting me; ca — also; adattvā — without giving (food); bhuktavān — has himself eaten; tasya — of him; sadyaḥ — immediately; te — of you; darśaye — I shall show; phalam — the result.
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.