Śrīmad-Bhāgavatam · Text 10.19.12
Who is speaking and story frame
तथेति मीलिताक्षेषु भगवानग्निमुल्बणम् ।
पीत्वा मुखेन तान्कृच्छ्राद् योगाधीशो व्यमोचयत् ॥ १२ ॥
tatheti mīlitākṣeṣu
bhagavān agnim ulbaṇam
pītvā mukhena tān kṛcchrād
yogādhīśo vyamocayat
“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.
Read the purport on Vedabase.ioFrom Canto 10, chapter 14 onward, the translation and purports were completed by Śrīla Prabhupāda's disciples after his departure, and published by the Bhaktivedanta Book Trust.