Dear Santosh, The co-relation to the soma cakra and the bijā mantras ending with "ṃ" or "ng" , from a kaulācāra and vāmācāra perspective, is very informative and new to me! Thank you for sharing the video link. The cerbro spinal fluid that gets generated from the pineal gland, is best withheld through the Khecarī Mudrā. The cerebro spinal fluid getting replenished with the angkāra and/or with liquor/madya in controlled quantities, is not supported by all sāmpradāyas or traditions. The guru is supreme in all these aspects and one should follow the tradition and mantras suggested, including the pronunciation. Those practicing the tantric way, must seek the proper guidance of a guru and proceed accordingly. As a note, I have performed the śrī mātangi sadhana on the guidance of a vāmācāra tantric guru using the 'ng' pronunciation. He did insist that I follow the same mantra pronunciation. I followed the same tradition for the śrī bagalāmukhi and śrī ucchiṣṭa gaṇapati sādhanas that I was initiated into, as well. My śrī vidyā guru insisted that I perform the śrī vidyā mantra sādhanas with the "ṃ" pronunciation. The "ṃ" pronunciation is very widely accepted down in the south by both tantrics and vedic folks and considered very safe. Based on my practice with both "ng" and "ṃ" pronunciations, My preference is to the "ṃ" method. Honestly, I did not notice any replenishment nor replacement of any cerebro-spinal fluids with the mantras I continue to practice. This aspect is more applicable at the highest levels of sādhana and kuṇḍalini activation.

Dear Krishna, with all due respects to your explanation, somewhere I feel that it is not just about pronunciation the way you have explained. I was also very curious about the difference between Aim or Aing, Shreem or Shreeng and was doing lot of search. Finally I found this video which seems to be very convincing. Request you to please watch this video especially from 28th minute or 31st minute. I think here the explanation is more scientific and clearly explains the difference. https://www.youtube.com/watch?v=v4UhUvqrl7s

Mr. Krishna will shortly post moola mantras. Please wait for a while. 

Is there any mula mantra for Ucchishta Ganapati. What I see from other websites is this - is this the right one? "ॐ नमो भगवते एकदम्ष्ट्राय हस्ति मुखाय लम्बोदराय उच्छिष्ट महात्मने आं क्रों ह्रीं गं घे घे स्वाहा om namo bhagavate ekadamṣṭrāya hasti mukhāya lambodarāya ucchiṣṭa mahātmane āṁ kroṁ hrīṁ gaṁ ghe ghe svāhā"

This can be explained from a Anusvāra (अनुस्वार) and Anunāsika (अनुनासिक) perspective. The anusvāra vowels are generally pronounced with a 'm' (म्) sound, but more specifically with a "ṃ"(ं). When the anusvāras are nasalized, it becomes a anunāsika and a 'n' (न्) sound gets introduced. When the bījā akṣarās are prononunced with the mouth the 'm' sound becomes more prominent and when nasalized, the 'n' sound gets generated in a subtle manner. When "OM" (ॐ) is pronounced as "om" (ओम्), the mouth closes on the 'm' sound, but the breath comes out of the mouth when the lips open up. However, if "OM" is pronounced as "oṃ" (ॐ), then the breath is let out of the nose with the lips closed. This generates a subtle 'n' sound, due to the nasal cavity. Keeping this theory in mind, the same "oṃ" can be changed to "ong" or "onm". Keep in mind that the 'n' sound should be very subtle and the 'g' sound is almost silent. The 'g' is simply there to get the 'n' sound. Symbolically, the candrabindu at the top represents the nasalized sound. That is, the breath while pronouncing the vowel should come out of the nose, rather than the mouth. To keep things easier, it's best to generate the 'ṃ' sound (not 'm') rather than the 'n' sound explicitly. So basically, the mantra below is best when prononunced with the 'ṁ' endings coming out of the nose than the mouth (usually, this is what happens naturally, but just make sure that there's no breath in the mouth). "om aiṁ hrīṁ klīṁ cāmuṇḍāyai vicce" ("ॐ ऐं ह्रीं क्लीं चामुण्डायै विच्चे॥") OR ("ॐ ऐँ ह्रीँ क्लीँ चामुण्डायै विच्चे॥") The nasal representation above is represented by the candrabindu(ँ) "m̐" rather than the regular bindu(ं) "ṃ". Both representations are correct in Sanskrit. The other literal representation in English as "ong aing hrīng klīng cāmuṇḍāyai vicce" is ("ॐ ऐँ ह्रीँ क्लीँ चामुण्डायै विच्चे॥") AND NOT "ओन्ग् ऐन्ग् ह्रीन्ग् क्लीन्ग् चामुण्डायै विच्चे" The 'ng' part is more of a nasal pronunciation rather than a literal representation. This is also one of the reasons why a guru is suggested, to get the correct sound and hear the sound of the mantra from him/her. There is no secret other than the fact that it could be pronounced with the mouth or through the nasal cavity. Sometimes, a little practice might be required to get this and also in some cases, one might prefer to let out the breath through the mouth than the nose (stuffy nose situations) etc. Also, the advice of the guru is supreme and one can follow the same sampradāya. There is much debate among scholars as to whether anusvāra is right or anunāsika is the correct way. The Anunāsika is more easier in some cases such as the word 'mantra'(मन्त्र) vs 'maṃtra'(मंत्र). Please choose what's best for you and go with it. For those who practice mantra japa mentally and align their breath, none of this applies, as no actual sound is generated externally.

It should be pronounced as - aim, hreem, kleem Please listen to this  PRONUNCIATION 

Sir, regarding the pronunciation is it aing, hreeng, kling or just aim hreem klim?

When Goddess Durga "told you" to stop eating non-vegetarian, why did you eat? You know what is the cause of your present situation. Surrender to Her for solutions. 

Sir I was suffering from many disease from many years.In those days, I used to worship lord shiva and goddess durga.One day goddess durga appear in my dream and saying. that your all problem will remove from your life if you stop eating animal flesh or meat.But unfortunate I ate this.One day a baba appear in my dream cursing me that you will not get even a piece of grain in future.From those day I use to see a man ,wearing a rag clothes wandering here from there in search of food.I used to see this all the time even I eating,moving,and even doing some other work.I continuously used to see.I feel from inside that I would become a begger.From those days I am becoming mentally weak,feeling like that I shall lost my mental capability.please tell me how shall I remove all this problem from my life.Any mantra,any pooja or any sadhna of any god and goddess.please must reply.

I just published the mantra. I practiced the mantra as initiated by my Guruji. I had good effect. I practiced as directed by my Guruji. For your other questions, you can read the comments for this article. I wish that some Yakshini practitioners answer all your questions here.