1. Bhagwan Shiva drinking Halāhala (poison) in order to save the 3 lokas. Because of that Bhagwan's neck has turned Blue. That's why we call him Neelkantha as well. 2. Valuables that we got from Sagar Manthan includes Lakshmi, Kaustabh, Kaam-Dhenu, Airavatham, Amrit & Halāhala.