Skandapurana 6.3.131.24

6.3.131.24

kadrūruvāca -
mama vākyamakurvāṇā ye kecidbhuvi pannagāḥ .
havyavāhamukhaṃ sarve te yāsyantyavicāritāḥ .. 131.24 ..

Kadrū said:
“Whichever serpents on earth do not obey my command,
they all shall go into the mouth of the fire without doubt!”