The Ribhus
Three brothers, Ribhu, Vaja and Vibhvan, sons of Sudhanvan, praised in eleven hymns of the Rigveda. Born mortal, they became gods by skill: they built the Ashvins' chariot, made Indra's bay horses, drew a cow from a hide, made their aged parents young and turned Tvashtri's one cup into four. Savitr gave them immortality and the third pressing of Soma is their share. They slept twelve days in the house of Agohya, the Sun. The Brahmanas say the gods shrank from their human scent; the Puranas do not continue their story.
Sources: Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer; Vedic Mythology, A. A. Macdonell (1897); Rigveda Brahmanas: the Aitareya and Kausitaki Brahmanas, tr. A. B. Keith (1920) · see The Ribhus's web