Śrī saubhāgyavidyā pañcadaśākṣarī mantra is explained here and you can read in this link. I am not too sure about anuttara ṣoḍaśī. I think this should be mahā ṣoḍaśī mantra, as mahā ṣoḍaśī mantra comes under Anuttarāmnāya pantheon..

There are many opinions on this. Soul is minuscule form of God. I have not read the book you have referred here. Hindu puranas do not support the idea of talking to souls, though there are many who claim that they can talk to the souls. I would sincerely advise you to desist from this. Please do not waste money on this. Think and repeatedly affirm that he is happy in the higher world. You could feel the happiness within you.

Dear Sir , There are these mediumship readings and they claim to connect to souls. In addition,you might have heard about Dr Brian Weiss, his books . Do Hindu puranas support this. I have lost my husband and want to reach out to him via these means. But I want to ensure I do nothing to cause unrest to his soul. I want him to be happy in the other world.

Thank you very much for writing here. Ātmabīja is not the one taken from birth chart but from various charts explained in Mantra Scriptures. Birth charts work only as supplementary in nature to various mantra charts. I have explained this in this article. How to derive ātmabījaFor the rest of your observation, I have answered in the previous comment. According to me, realizing Her is more important rather than going with Scriptures. I go with what my Guru has taught me. Śrī Vidyā is in no way different from Brahma Vidyā and the ultimate goal of Śrī Vidyā is to realize Brahman through Her. We have several Upaniṣad-s leading Brahman and when Brahman is one, what is the need for so many Upaniṣad-s? Therefore, it all depends upon Guru-s and I always go with what my Guru has taught me.

Thank you very much for writing this observation. Where is the need to apologize? You have beautifully put forth your point. This issue has been discussed several times. This is how my Guru taught me and I am following his instructions. My Guru’s lineage is very powerful and I am not saying this to boast myself, as I am not interested in any sort of publicity. My Guru’s Guru is a cirajīvin (चिरजीविन्) Mārkaṇḍeya, Aśvatthāman, Bali, Vyāsa, Hanumat, Vibhīṣaṇa, Kṛipa and Paraśu Rāma. My Parma Guru is worshiped with this mantra “brahmaputrojvalabhujaḥ kṣīrakṛṣṇā ajināṁbharaḥ |ब्रह्मपुत्रोज्वलभुजः क्षीरकृष्णा अजिनांभरः। I have absolute faith in my Guru. Assuming that in the wildest of my imagination that I do not believe in my Guru, I have personally initiated a select few into Mahāṣoḍaśī mantra with ātmabīja and at least 90% of them have turned into realized souls and at least 50% of them are on their way to Mahāśūnya. Whatever said and done, the aspirant should move towards to Parāśakti and with Her Grace attain Śiva and with His Grace merge into Mahāśūnya. Beyond this, I humbly submit that no further validations are required. In fact working with Mahāṣoḍaśī mantra with ātmabīja will not take more than three months to experience Bliss and another three months towards Self-realization. Further stages are advised according to individual levels. In fact, I have not met any of these great people to whom I have initiated mantras. Everything was happening on energy level. I always like to go with practicality and reality rather than meticulously following Scriptural dictum. I honestly believe that I have clarified my point on this issue. If any futher clarifications are required I will be too happy to provide them here.

There are many mantras for a Guru. It is not kept secret. In Śrī Vidyā cult, there are three Gurus, First, the Guru who initiates mantras to his disciple. The other two Gurus are Guru's Guru and Guru's Guru's Guru. The secrecy lies only in the Dīkṣā names of these Gurus. You can read more about this in this article. Guru maṇḍalaThere are other references to Guru in various articles in this site.

I am overwhelmed with the observations made here. I apologize was not replying to the comments, as I was out of station on a personal work. I will place my reply here for consideration by others in a day or two.

SirCould you please tell us what is a guru mantra and why is it kept secret and why is it called most powerful and effective than any other mantras ?Thank you

SirI heard that guru mantra is everything and supreme.So much that it exceeds even gods in benefits. I have not seen any where online or from any practitioner of mantra saying so.If you have any idea on this coukd you please tell me how guru mantra is everything ?Thank you

There is no judgment being passed, maybe I am not even worth to be the dust of the author's feet. It was our opinion. We are a community of Sri Vidya Temple, New York and we were discussing this concept.We are not disputing the atma bija. It is like finding starting letter of Name for the child based on its birth Star. Based on the 5th bhava or Lagna or favourable grahas we can find a favourable gods/beejas for the native. This is being done in astrology. However, we do not agree in applying this to Mahashodasi mantra as it distorts the structure of the mantra. We always go back to the scriptures to verify our doubts and did not find any evidence supporting this theory.We have seen some web sites of Sri Vidya offering atma beejas for Rs 2000 and there is an astrologer in New York offering atma beeja for $100. It seems good business for finding atma beejas, great profitability. The dangerous part is when people mix atma beejas with Mahashodasi which has no scriptural backing. It is like people jazzing up veda mantra like gayatri and mritunjaya, these mantras are not to be modified into pop/ disco tunes. In the same way, Mahashodasi mantra is not to be modified. There are mantras like Hanuman Chalisa, which can be played around in disco tune but not Mahashodasi.There is every possibility that we might be wrong, but we are just expressing our opinion and not judging anybody. The author is a learned person and is a truly blessed person. Best Regards!