In Hinduism, Yajña or Yagna, also known as Havana in modern contexts, is a ritual done in front of a sacred fire, often with mantras. Yajna has been a Vedic tradition, described in a layer of Vedic literature called the Brahmanas, as well as in the Yajurveda. The tradition has evolved from offering oblations and libations into sacred fire to symbolic offerings in the presence of said sacred fire.