Yajna
Ritual offering sacrifice in Hinduism
In Hinduism, Yajña or Yagna (Sanskrit: यज्ञ, lit. 'act of devotion, worship, offering in fire', IAST: yajña), also known as Havana in modern contexts, is a ritual done in front of a sacred fire (agni), 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.
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