One verse

Srimad Bhagavatam 6.13.4

6.13.4

श्रीशुक उवाच वृत्रविक्रमसंविग्ना: सर्वे देवा: सहर्षिभि: । तद्वधायार्थयन्निन्द्रं नैच्छद् भीतो बृहद्वधात् ॥ ४ ॥

sri-suka uvaca vrtra-vikrama-samvignah sarve devah saharsibhih tad-vadhayarthayann indram naicchad bhito brhad-vadhat

sri-sukah uvaca
Sri Sukadeva Gosvami said
vrtra
of Vrtrasura
vikrama
by the powerful activities
samvignah
being full of anxieties
sarve
all
devah
the demigods
saha rsibhih
with the great sages
tat-vadhaya
for the killing of him
arthayan
requested
indram
Indra
na aicchat
declined
bhitah
being afraid
brhat-vadhat
due to killing a brahmana.

Sri Sukadeva Gosvami answered: When all the great sages and demigods were disturbed by the extraordinary power of Vrtrasura, they had assembled to ask Indra to kill him. Indra, however, being afraid of killing a brahmana, declined their request.