The Ikfvdku Dynasty - Verse 111-112

When he was asked to choose a boon as he pleased, the son of the king (Satyavrata) requested him to be his preceptor. When the danger of the drought lasting for twelve years was averted, the sage (Visvamitra) crowned him in the hereditary kingdom and presided over his sacrifice. Even as Devas and Vasistha were watching, the holy lord KauSika (ViSvamitra) made him ascend to heaven along with his physical body.