PURPORT

It is said, sarpah krurah khalah krurah sarpat kruratarah khalah: "The snake is very crooked and envious, and so also is a person like a demon." Mantrausadhi-vasah sarpah khalah kena nivaryate: "One can bring a snake under control with mantras, herbs and drugs, but an envious and crooked person cannot be brought under control by any means." Considering this logic, the Supreme Personality of Godhead thought it unwise to distribute nectar to the demons.