Vajradhara is a deity in Vajrayana Buddhism, the esoteric form of Buddhism practiced in Tibet and other Himalayan countries. Vajradhara is the highest deity in the Tantric Buddhist deity hierarchy and is considered the ultimate source of all Buddhas.Vajradhara is revered in Tibetan Buddhism as the embodiment of the ultimate nature of reality, the pure and unchanging essence that underpins all phenomena. Vajradhara is frequently depicted holding a vajra, a thunderbolt-like symbol of indestructible power and wisdom, as well as a bell, which represents the feminine aspect of enlightenment and the ability to subdue negative forces.Vajradhara is also regarded as the union of the male and female enlightenment principles, embodying the unity of wisdom and compassion. Vajradhara, in this sense, represents the ultimate realization of the union of emptiness and compassion, the two main aspects of Buddhist practice.Vajradhara is regarded as the guru or spiritual teacher who initiates the practitioner into the secrets of Tantric Buddhism and guides them on the path to enlightenment in the Vajrayana tradition. Meditation on Vajradhara and reciting his mantras is thought to lead to an increase in wisdom, compassion, and spiritual power, and ultimately to the realization of the true nature of reality.