One verse

Srimad Bhagavatam 9.7.3

9.7.3

गन्धर्वानवधीत् तत्र वध्यान् वै विष्णुशक्तिधृक् । नागाल्लब्धवर: सर्पादभयं स्मरतामिदम् ॥ ३ ॥

gandharvan avadhit tatra vadhyan vai visnu-sakti-dhrk nagal labdha-varah sarpad abhayam smaratam idam

gandharvan
the inhabitants of Gandharvaloka
avadhit
he killed
tatra
there (in the lower region of the universe)
vadhyan
who deserved to be killed
vai
indeed
visnu-sakti-dhrk
being empowered by Lord Visnu
nagat
from the Nagas
labdha-varah
having received a benediction
sarpat
from the snakes
abhayam
assurances
smaratam
of those who remember
idam
this incident.

There in Rasatala, the lower region of the universe, Purukutsa, being empowered by Lord Visnu, was able to kill all the Gandharvas who deserved to be killed. Purukutsa received the benediction from the serpents that anyone who remembers this history of his being brought by Narmada to the lower region of the universe will be assured of safety from the attack of snakes.