The Indian Tantras, which are numerous, constitute the scripture (Sastra) of the Kaliyuga, and as such is a voluminous source of present and practical orthodox "Hinduism". The Tantra Shastra is, in fact, whatever be its historical origin, a development of the Karmakanda (using that term in the general sense of ritual section of the scripture), promulgated to meet the needs of that age. Siva says: "For the benefit of men of the Kali age, men bereft of energy and dependent for existence on the food they eat, the Kaula doctrine, O auspicious one! is given" (Ch. IX, verse 12). To the Tantras, we must therefore look if we would understand aright both ritual, yoga, and sadhana of all kinds as they exist today, as also the general principles of which these practices are but the objective expression.
