(1) A spiritual practice that one promises to do. (2) The mental factor with which one makes such a promise. The promise may be made either formally with a ritual or informally, and either verbally or nonverbally. (3) In the case of a commitment toward a spiritual master, the mental factor with which one promises to relate to that teacher in a healthy manner, in accord with the traditional scriptural description. The term does not have the connotation of a sense of duty or an obligation.