Srimad Bhagavatam Canto 10, Chapter 19, Text 12

SB 10.19.12

tatheti militaksesu
bhagavan agnim ulbanam
pitva mukhena tan krcchrad
yogadhiso vyamocayat
 
Translation: 
 
“All right,” the boys replied, and immediately closed their eyes. Then the Supreme Lord, the master of all mystic power, opened His mouth and swallowed the terrible fire, saving His friends from danger.
 
Purport: 
 
The cowherd boys were suffering from extreme fatigue, hunger and thirst, and were about to be consumed by a horrible forest fire. All this is indicated here by the word krcchrat.
Srimad Bhagavatam Canto 10, Chapter 19, Text 11
Srimad Bhagavatam Canto 10, Chapter 19, Text 13