The account goes that the Devas had lost their strength by the curse of Durväsä Muni, and to regain it, they approached Lord Brahma and Lord Shiva. They directed all the demigods to Lord Vishnu and after praying to Lord Vishnu, he instructed them to churn the ocean of milk Ksheera Sagara (primordial ocean of milk) to receive amrita (the nectar of immortality). This required them to make a temporary agreement with their arch enemies, the Asuras, to work together with a promise of sharing the wealth equally thereafter. However, when the Kumbha (urn) containing the amrita appeared, a fight ensued. For twelve days and twelve nights (equivalent to twelve human years) the Devas and Asuras fought in the sky for the pot of amrita. It is believed that during the battle, Lord Vishnu (incarnated as Mohini-Mürti) flew away with the Kumbha of elixir spilling drops of amrita at four places: Allahabad (Prayag), Haridwar, Ujjain and Nashik.