The Mahanirvan Tantram is the most important of all the Tantram that are to be found now. It consists of two parts. The Text of the first portion only has been published in Bengal. The second part, a reference of which is to be met with in the first, is not to be found any where. The author made many attempts to find it out but all to no purpose. Sometime before an information reached him that the Text of the second part was available in the temple of Kamakhya in Assam. He tried to have a look at it through some of his friends and on enquiry it was found that the text there is nothing but a version of the first part that we have translated.