Scattered verses, never a connected tale. For Kutsa as he battled Indra stole away the Sun's car-wheel (4.30.4); he stole Surya's chariot wheel and bore Kutsa with the steeds of Wind to Shushna (1.175.4); one wheel of the Sun he rolled forward and one he set free for Kutsa (5.29.10); at dawn he tore the Sun's wheel off (1.130.9); with Soma he pressed down the wheel of Surya (4.28.2). Elsewhere he speeds the Sun and helps Etasha, the Sun's horse (4.30.6).
Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer § 4.30.4-6; Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer § 1.175.4; Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer § 5.29.9-10; Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer § 1.130.9; Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer § 4.28.2
Macdonell calls this the only myth told of Surya in the Rigveda, Indra vanquishing him and stealing his wheel, and suggests it may allude to the sun obscured by a thunderstorm.
A scholar's interpretation, not the hymn's statement.
Sources: Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer; Vedic Mythology, A. A. Macdonell (1897)
Brahma kills the demon Vajranabha with his lotus-weapon.
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Gods and demons churn the ocean of milk for the nectar.
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