Kasyapa - synonymous with Kurma - is also mentioned throughout as Prajapati. This includes in relation to the Samudra manthan, most notably in the legend of Garuda, the son of Kasyapa and Vinata (and later the mount of Vishnu), created through sacrificial rituals with the help of Indra and Valikhilya Rishis. While seeking the Amrita produced by the churning of the ocean to free himself and his mother from slavery by Kadru (another wife of Kasyapa) and her 1,000 serpent-sons, Garuda is told by Kasyapa to eat two quarrelling Rishi brothers incarnated as a quarrelling Elephant and Tortoise to gain enough energy. Later, Garuda battles Indra and the celestials and extinguishes a raging fire to obtain the Amrita. In agreement with Indra, Garuda tricks the serpents to achieve freedom without giving them the Amrita; due to licking the drops left behind, the serpents develop forked tongues. Other details include: