Srimad Bhagavatam Canto 10, Chapter 23, Text 38

 SB 10.23.38

athanusmrtya vipras te
 anvatapyan krtagasah
yad visvesvarayor yacñam
 ahanma nr-vidambayoh
 
 
Translation: 
 
The brahmanas then came to their senses and began to feel great remorse. They thought, “We have sinned, for we have denied the request of the two Lords of the universe, who deceptively appeared as ordinary human beings.”
 
Purport: 
 
Lord Krsna and Lord Balarama did not try to deceive the brahmanas: They straightforwardly requested food from them. Rather, the brahmanas deceived themselves, as indicated by the Sanskrit word nr-vidambayoh, which means that Krsna and Balarama are bewildering for an ordinary human being who considers Them also to be human. Still, because the wives of the brahmanas were great devotees of the Lord, the foolish brahmanas received spiritual benefit and finally came to their senses.
Srimad Bhagavatam Canto 10, Chapter 23, Text 37
Srimad Bhagavatam Canto 10, Chapter 23, Text 39