The importance of this previously unpublished Tantra consists in the fact that it belongs to what some call the "prohibitive" class, alleging it to belong to, and have been operative in, another and not in the present age (kalpa). The Tantra is of interest particularly as it deals with the vexed subject of the existence or non-existence of Pashu-bhava in the Kaliyuga and the ritual use of the panchatattva.