text: In the Mahabharata, the son of a god who has this role proves himself superior to the son of another god by knocking out his own teeth to give a beggar some alms.
full_question: In the Mahabharata, the son of a god who has this role proves himself superior to the son of another god by knocking out his own teeth to give a beggar some alms. The Baltic god who served this role was married to Meness, who had an affair with Ausrine. The Gayatri mantra prominently mentions a Vedic deity responsible for an aspect of this domain called Savitr. Arvak and Alsvid serve one god of this domain, while another such god rides in a chariot pulled by seven horses. After Tecciztecatl proves to be too cowardly, Nanahuatzin calmly walks into a bonfire and becomes the final god of this domain in Aztec myth. The severed asura head Rahu in Hindu myth and the varg Sköll in Norse myth both seek to devour the representation of a god of this domain. Heracles once received a golden goblet from a god with this role after he aimed at arrow at it when he became too hot. For 10 points, name this domain of gods like Surya and Helios.
first_sentence: In the Mahabharata, the son of a god who has this role proves himself superior to the son of another god by knocking out his own teeth to give a beggar some alms.
raw_answer: the Sun [or sun gods/goddesses/deities; or solar deities; or obvious equivalents]