In Hinduism, Agastya is a legendary Vedic sage or rishi. Some say that it was the sage Agastya who first brought and popularized the Vedic religion to south India. Agastya and his clan are also credited to have "authored" many mantras of the Rig Veda, the earliest and most revered Hindu scripture, in the sense of first having the mantras revealed in his mind by the Supreme Spirit Brahman. In some reckonings, Agastya is also said to be one of the greatest Seven Sages or Saptarshis. The word is also written as Agasti.