The Matsya Purana dedicates several chapters to the legend of the Samudra manthan, which itself contains several notable variances. In this account, the Daityas led by Bali repeatedly defeat the Devas led by Indra due to being resurrected by the sage Sukra (son of Bhrgu) when killed, using a mantra provided by Shiva. Advised by Brahma, the Devas secure an alliance with Bali in Patala, the agreement of Mandarachala (king of the mountains) to be used as a churning rod, and the agreement of Sesa and Kurma - said to be 'endowed with 1/4 of Vishnu's power... to support the Earth' - as the rope and base of the churning rod, respectively. Unable the churn the Ocean of Milk by themselves, the Devas and Asuras approach Vishnu 'absorbed in deep meditation' in Vaikuntha for help, who agrees (CCXLIX).