SB 12.6.17

sarpa-satre samiddhāgnau
 dahyamānān mahoragān
dṛṣṭvendraṁ bhaya-saṁvignas
 takṣakaḥ śaraṇaṁ yayau
Word for word: 
sarpa-satre — in the snake sacrifice; samiddha — blazing; agnau — in the fire; dahyamānān — being burned; mahā-uragān — the great serpents; dṛṣṭvā — seeing; indram — to Indra; bhaya — with fear; saṁvignaḥ — very disturbed; takṣakaḥ — Takṣaka; śaraṇam — for shelter; yayau — went.
Translation: 
When Takṣaka saw even the most powerful serpents being burned in the blazing fire of that snake sacrifice, he was overwhelmed with fear and approached Lord Indra for shelter.