Srimad-Bhagavatam, Canto 8, Chapter 7 (texts 36-42) describes the benevolent activities of Lord Siva when the living entities were threatened by the deadliest poison (halahala):
“Srila Sukadeva Gosvami said: ‘Lord Siva is always benevolent toward all living entities. When he saw that the living entities were very much disturbed by the poison, which was spreading everywhere, he was very compassionate. Thus he spoke to his eternal consort, Sati, as follows.
“ ‘Lord Siva said: “My dear Bhavani, ju
