Lingodbhava is a story from Hindu mythology that explains how Lord Shiva, who is one of the most important gods in Hinduism, got his form. One day, Lord Brahma and Lord Vishnu were having an argument over who was the most powerful god. They decided to test each other by seeing who could find the top or bottom of a gigantic pillar of light that had appeared before them.
Lord Vishnu turned himself into a boar and dug deep into the earth to find the bottom of the pillar, while Lord Brahma turned into a swan and flew up to find the top. Both of them searched for a very long time, but neither could find what they were looking for.
Suddenly, the pillar split into two and Lord Shiva appeared in his new form. He had always been present in the pillar but was invisible to both Lord Vishnu and Lord Brahma. Lord Shiva's new form had five faces, representing the five elements of nature: earth, water, fire, air, and space. He also had ten hands, each holding a different weapon, and his entire body was covered in ash.
This event is known as Lingodbhava, and it signifies the ultimate power of Lord Shiva and his presence in everything around us.