" who is neela devi,
here is some information which I know. Source Shri Pithambara Sanskrit Parishad,
Datia, MP.
Pranvam, Maya, Vadhu, Koorch and Astra (Aum, Hreem, Streem, Hoom, Phat)
constitutes Shri Tara Bhagawati five lettered Maha Vidya. Out of this when 3
combines i.e Hreem, Streem, Hoom, Thri letter mantra constitutes " Neela
Saraswati " . It is also known as Tara Kulluka.
Neela devi or neela sarawati is a part of Tara Mahvavidya only.
and also there is Neel Tara also.
As Mantra Mahodadhi describes Tara has several forms which includes Ekajata
tara, Sparsh tara, Neel tara (chandra ghanta), Maha tara, Trailokya vijay tara,
chintamani tara, siddha jata, .....etc.
Several Amnaya's describes different tara's in different forms.
North Amanya comprises of Tara Ugra, Mahogra, Vajra, Neela saraswati (3
lettered mantra), Kameshwari, and Bhadrakali.
Aum proves its Brahmic nature.
H in Hreem denotes effulgence and R denotes the emancipation from ignorance
nad theese H and R unites with " EEM " gives the word HREEM.
Takara is the destroyer of all the sins, Repha denotes Tattva and Treem or
Streem is the great seed which represent the Brahama Tattva.
Hoom represents Knowledge and Phat is the destroyer of Ignorance.
Any body who knows meanings of Mantras like this becomes Maheswara.
Accroding to Peethambara peeta Swamiji in his words, No one is capable of
determining the form of shri tara Mahavidya. What ever which is known or written
is the result of complete inspirations from her only.
The beeja mantra is
OM SHREEM HREEM HRASAOUH HUM PHAT NEELA SARASWATI SWAHA.
The dhyanam for this mantra isÂ. GHANTAM SHIRAHA SHOOLAMASI KARAGRE,
SAMBHIBRATHIM CHANDRAKALAVATHAMSAM, PRAMADHNATHEEM PADATHALE PASHUM THAM BHAJE
MUDA NEELA SARASWATI TAM.
Meru tantra mentions sapta(seven) sarasvati-s:
1)chintAmaNi sarasvatI
2)GYAna sarasvatI
3)nIla sarasvatI - This devata if often synonymous with tArA, and some
variations of her mantra address her as ekajaTe! mahogratAre! etc.,
4)ghaTa sarasvatI
5)kini sarasvatI
6)antarikSha sarasvatI
7)trikUTa sarasvatI