Origin of the Vrta
Every God and Demon then started to pray to Shiva for Help, Lord Shiva came to the rescue and ordered Nandi to get the poison, and lord Shiva drank all of it. Hearing this goddess Parvati, came to save the universe. As all of the creation lies inside Lord Shiva, if the poison would reach Shiva’s belly then, the whole creation would be destroyed. Goddess Parvati grabbed Lord Shiva’s throat and made the poison stay there. Thus turning Lord Shiva’s throat bluish, giving him the name Nilkantha, or the one with a blue throat. Hala-Hala started taking its toll. The poison put lord Shiva asleep, till Trayodasi day when Lord Shiva started to Show signs of normalcy. Nandi was covered with false ego and felt that in spite of inhaling the fumes of Hala-Hal and a few drops falling in his mouth nothing happened to him. He started to feel superior to Lord Shiva, seeing Nandi dance off in Ego lord Shiva, took a leap, and started to dance in between the horns of Nandi. Every time Nandi attempted to throw Shiva off, Shiva took a leap gracefully into the air. Thus Nandi and all Gods experienced the merciful and benevolent form of Lord Shiva. Therefore it is believed that Lord Shiva is most benevolent on Pradosha or Trayodashi day.



