Agnihotra (अग्निहोत्र) is a Vedic yajña (ritual or sacrifice) performed in orthodox Hindu communities. It is mentioned in the Atharvaveda (11:7:9) and described in detail in the Yajurveda Samhita and the Shatapatha Brahmana (12:4:1). The Vedic form of the ritual is still performed by the Nambudiri Brahmins of Kerala and by a small number of Vaidiki Brahmins in South Asia. Modern versions of the Agnihotra are promoted by various individuals and groups as a non-sectarian ritual for the healing and purification of the atmosphere and as a primary source of vibhuti or sacred ash.
Read more about Agnihotra: The Vedic Agnihotra, Performance and Contemporary Meaning of The Agnihotra (simple Interpretation For Common Understandin, Procedure