Account has to be taken of the persistent legend regarding the ambrosia which gave strength to the gods and prolonged their existence. In “Teutonic mythology” it is snatched by Odin from the giants of the Underworld, and is concealed in the moon, which is ever pursued by the demon wolf Managarm, who seeks to devour it.
The development of the Indian form of the myth is found in the story of “The Churning of the Ocean”, which is dealt with in the _Mahábhárata_, the _Ramáyana_, and several of the _Puranas_.
According to the epics, the ambrosia, the Indian name of which is amrita (both words implying immortality), was required by the gods so as to enable them to overcome the demons. In _Vishnu Parva_, however, a Brahmanic addition to the myth was made so as to exalt a sage and illustrate the power he could exercise over the old Vedic deities. It is related that Durvásas obtained from a merry nymph a sweet-scented, inspiring garland which made him dance. He presented it to Indra, who placed it on the head of his elephant. The elephant then began to prance about, and grew so excited that it cast the garland on the ground. Durvásas was enraged because that his gift was slighted in this manner, and cursed Indra and foretold the ruin of his kingdom. Thereafter the king of the gods began to suffer loss of power, whereat the other deities became alarmed, fearing that the demons would overcome him in battle. Appeal was made to Brahma, who referred the gods to Vishnu, the Preserver. That supreme being commanded that the ocean should be churned for amrita.
In the epics the gods allied themselves with the demons to procure amrita from Vishnu's Sea of Milk. The “churning stick” was the mountain Mandara, and the “churning rope” the serpent Vasuka[179] (Ananta or Shesha). Vishnu said: “The demons must share in the work of churning, but I will prevent them from tasting of the amrita, which must be kept for Indra and the gods only.”
The gods carried the mountain Mandara to the ocean, and placed it on the back of Kurma, the king of tortoises, who was an incarnation of Vishnu.[180] Round the mountain they twisted the serpent, which was “a part of a part of Vishnu”, the Asuras holding its hood and the gods its tail. As a result of the friction caused by the churning, masses of vapour issued from the serpent's mouth which, becoming clouds charged with lightning, poured down refreshing rains on the weary workers. Fire darted forth and enwrapped the mountain, burning its trees and destroying many birds, and the lions and elephants that crouched on its slopes. In time the Sea of Milk produced butter flavoured by the gums and juices which dropped from the mountain. The gods grew weary, but Vishnu gave them fresh strength to proceed with the work. At length the moon emerged from the ocean; then arose the Apsaras, who became nymphs in Indra's heaven; they were followed by the goddess Lakshmi, Vishnu's white steed, and the gleaming gem which the god wears on his breast. Then came Dhanwantari, the physician of the gods, who carried a golden cup brimming with amrita. Beholding him, the Asuras cried out: “The gods have taken all else; the physician must be ours.”