Vajradhara is a Buddha in Esoteric Buddhism. This branch of Buddhism is also called Vajrayana or Tantric Buddhism.Vajradhara, which means “holding a vajra” (thunderbolt), represents the highest state of enlightenment. Here he is shown in union with Prajna, a female principle who symbolizes wisdom. Union with her represents the attainment of knowledge. The Buddha sits firmly in the meditation posture, holding a vajra, and a bell with a vajra handle, while the female embraces him with her arms and legs. She holds a curved knife and skull cup. Their faces reflect harmony: they touch their noses, lips, and chins. A deep serenity characterizes their embrace.