In
Tibet, Hayagriva was promoted especially by Buddhist teacher
Atiśa and appeared as a worldly
dharmapala. His special ability is to cure diseases, especially skin diseases even as serious as leprosy, which is said to be caused by
nāgas. According to Tibetan Buddhism, Hayagriva is the wrathful form of
Vajrasattva, who assumes the form Avalokiteśvara and turns into Hayagriva in order to defeat the powerful demon
Rudra, who has submitted the gods. He is accompanied by
Vajrapani, who assumes the power of
Tara and then becomes the wrathful
Vajravārāhī. The two are cosmically related to Rudra, as in their previous lives, Vajrasattva was Rudra's master, while Vajrapani was his fellow disciple, who unlike Rudra understood and respected
dharma. Hayagriva and Vajravarahi challenge Rudra through nine mighty dances and battle with him, and at the end, Hayagriva turns diminutive and enters Rudra's anus, after which he turns into a giant and destroys him from inside out. Vanquished, Rudra promises to become a protector of dharma, and his demonic body is worn as a garb by Hayagriva, who emerges with his horse head from the skull. In another version, Vajrasattva impersonates Rudra and seduces the latter's wife, the rakshasha queen Krodhisvari. Hayagriva is reborn as the resultant child,
Vajrarakshasha, who takes over Rudra's realm, submits him and destroys him by plunging a three-pointed
khaṭvāṅga into his chest. He then devours Rudra, purifies him in his stomach and excretes him turned into a servant of dharma, who hands his army of demons to him as attendants. == In China ==