This book outlines the process of Tattvasuddhi by practice of Pancadharana Mudra. By this practice, the Yogi purifies the Pancamahabhutas-the Prthvi, Jala, Agni, Vayu and Akasa (Ether). This is also called Bhutasuddhi and it is practiced to achieve perfection in Tantrasadhana. Breathing is most essentialfor life.