About Homa (ritual)

In the Vedic Hinduism, a homa also known as havan, is a fire ritual performed on special occasions by a Hindu priest usually for a homeowner. The grihasth keeps different kinds of fire including one to cook food, heat his home, amongst other uses; therefore, a Yajna offering is made directly into the fire. A homa is sometimes called a "sacrifice ritual" because the fire destroys the offering, but a homa is more accurately a "votive ritual". The fire is the agent, and the offerings include those that are material and symbolic such as grains, ghee, milk, incense and seeds.
Garbhadhatu (Sanskrit) or Taizo-kai (jp.) - Mandala

Shingon Buddhism – The Japanese root of Esoteric Buddhism

Shingon Buddhism is one of the major schools of Buddhism in Japan and one of the few surviving Vajrayana lineages in East Asia, originally spread from India to China through traveling monks such as and . Known in Chinese as the Tangmi these esoteric teachings would later flourish in Japan under the auspices of a Buddhist monk named (空海), who traveled to Tang China to acquire and request transmission of the esoteric teachings. .
Monks attending the 2003 Kalachakra empowerment in Bodhgaya, India.

Vajrayana – Buddhist tantric traditions

Vajrayana is Tantric Buddhism, the form of Northern Buddhism that relies primarily on the Tantras, technical manuals said to have been taught by the Buddha, and offer complete enlightenment in 1, 7 or 21 lifetimes. practices are connected to specific lineages in Buddhism, through the teachings of lineage holders. Others might generally refer to texts as the Buddhist Tantras. It includes practices that make use of mantras, dharanis, , mandalas and the visualization of .