===Disturbing you again=== 
 Thanks for your answers sir. 
 I do not quite know about the Saundaryalahari and Tripura Rahasya, so please tell me about it in as short as possible. 
 I've one difficulty, if you don't mind, about the 'Barabhay mudra'. It is said that Ramakrishna once showed this during his samadhi in the Kali Puja festival. Also I find this term associated with Kali. So what is this 'Barabhay mudra'? 
 Sir, you know better than me about the tantrics. I wonder how can they call upon the Mother for powers, by which they can rule over others according to their will. Sri Ramakrishna Paramhansa has told us that using the powers we get by Sadhana bifurcates our path of Supreme Knowledge and we've to born again in the world of Maya, for the completion of the incomplete work of our past lives. Now, can you tell me why the tantrics run after powers instead of God. 
 I do hope you'll not get angry over me, for disturbing you so much.