Few years ago I was introduced to Nivarna Mantra "Oum Aing Hring Kling Chamundaye Vichey" by my mother. I started mentally chanting it as as and when I could. I saw positive and raical changes started happening in my life.
Meanwhile I got inclined towards Maa Kaali and want to do Dakshin Kaali Sadhana. I have read in a book that Nivarna Mantra can also be used for Dakshin Kaali Sadhana, but the mantra mentioned in the book has Swaha at the end, i.e. "Oum Aing Hring Kling Chamundaye Vichey Swaha". My questions to the experienced Sadhaks here are:
1) Can Nivarna Mantra be used for Dakshin Kaali Sadhana?
2) If answer to question 1 is yes, then should the mantra have Swaha at the end during all phases (i.e. Japa, Homa, Tarpan and Marjan)?
3) If answer to question 1 is yes, then should the dhayan mantra of Kali be used or dyan mantra of Chamunda?