https://www.google.com/search?q=vatapi
Long long ago there was a demon by name Ilvala in the city of Manimathi. He was very brave. He had a brother by name Vatapi. Once Ilvala invited a tapasvi brahmin, played host to him with reverence and begged him to grant a boon. He desired to have a son equal to Devendra. But the brahmin did not oblidge. Ilvala become very angry with the brahmin. This made him hate the entire brahmin community and he began to kill brahmins. He was very very wise.He devised a plan.He knew the art of magic. Besides, he was arrogant and short tempered.He would turn his brother Vatapi into a goat. He would invite a chaste brahmin. He would cut the goat and cook it while the guest went for a bath. When the guest returned he would serve him food. He had a strange power. When he shouted loudly the name of a dead person, the latter would come alive. When the brahmin left him after the meal, he would call his brother Vatapi whom he had turned into a goat and killed. He would shout, "Vatape athragacha."Vatapi would rip open the stomach of the brahmin and come out laughing. The brahmin would roll on the ground and die. In this way Ilvala would invite many brahmins everyday and kill them.
http://en.wikipedia.org/wiki/Badami#Etymology
Ilwala, the very word means "absence of good qualities—of restless mind." Vaataapi means "one who drinks of all life” meaning "death." Travellers crossing through the jungle of life when invited by "restless mind" to have a free feast of the "spirit of death" it is better that as spiritual seekers,we avoid it. Else we may meet with our end of the spiritual career then and there..... But Agasthya, a Man-of-wisdom (Gyani) cannot be destroyed by the tricks of the "restless mind," Ilwala. He can "digest" away Vaataapi and warn the Ilwala to behave well for the rest of his life time!
