In Mikkyo it is regarded as a symbol of aspiration for Buddhahood (a mind to seek enlightenment through mastering the truth) and seen as the same entity as Kongosatta which has the same character.
密教では菩提心(真理を究めて悟りを求めようという心)の象徴とされ、同じ性格を持つ金剛薩埵と同一視される。