In the Goma ceremony, fire symbolizes the wisdom of the Buddha and the wooden sticks or tablets used as fuel represent human desires (the root of suffering). In this ritual the Buddha burns away the root of suffering for the participants.
The Goma ceremony is believed to have evolved from the Vedic Agnicayana ritual and can be performed for the benefit of individuals, a specific group or community, or for all sentient beings. The consecrated fire is viewed as having a powerful spiritual and psychological cleansing effect. The ritual is performed to destroy negative energies, thoughts, and desires