After having changed his yaj~nopavIta, the dvija who has studied the shruti of the bhR^igu-s and the a~Ngiras goes to the preceptor to unlock the great secret of the tantra. He recites the triShaptIya which is the foundation of all bIja-s and in the morning recites the sUkta of the maitrAvaruNi beginning with “prAtar agniM pratar indraM…”. He then invokes the uShA-s as ordained in the tradition of the atharvan-s and performs an Achamana. Then he invokes rAtrI. Having done this he prepares for the worship of the glorious kubjIshana who is in the embrace of mahA-prachaNDa-kubjikA-pratya~NgirA with the highly secret mantra known as the raudra-atharvashiras, the hidden secret crest of nIlarudra, only passed by the anugraha of shiva to the student. He who knows this mantra is considered the master of the atharvan lore. His preceptor then unfolds before him the two supreme chakra-s known as the mahA-kubjIshAna maNDala, which is more complex in its construction than even the shrI-chakra, and the mahA-pratya~NgirA chakra.
Then the preceptor asks him to recite the kubjikA sUkta:
shanno devI…abhi sravantu naH ||
kubjikA parameShThinI vAgdevI brahma-saMshritA |
yayaiva sasR^ije ghoraM tayaiva shAntir astu naH ||
idaM yat parameShThinaM mano vAM brahma-saMshritaM |
yenaiva sasR^ije ghoraM tenaiva shAntir astu naH ||
imAni yAni pa~nchendriyAni manaH ShaShThAni me hR^idi brahmaNa saMshR^itAni |
yaireva sasR^ije ghoraM taireva shAntir astu naH ||
aShTAviMshAni shivAni shagmAni saha yogaM bhajantu me |
yogaM prapadye kShemaM cha kShemaM prapadye yogaM cha namo .ahorAtrAbhyAm astu ||
Then he goes to the karNamoTa tree, the kula vR^ikSha, and recites the mAdhavI vidyA to worship kubjikA there in:
madhuman mUlaM madhumad agramAsAM madhuman madhyaM vIrudhAM babhUva |
madhumat parNaM madhumat puShpamAsAm madhoH saMbhaktA amR^itaM ghR^itam annaM duhutAM kubjikAtmakaM ||
Then he focuses on his breath and invokes viShNu there in and kubjikA emerging as the power of his mAyA:
ajapA vaiShNavI mAyA japyena sAjitA parA |
kubjikA brahmavidyA sA yA vedair upagIyate ||
anAkhyeyam idaM guhyaM yogI-kesha-samaM nibhaM |
haMsasya gativistAraM bhukti-mukti-phala-pradaM ||
Then he perceives his oneness with indra, viShNu, prajApati and the whole universe and utters:
tvam indras tvaM mahendras tvaM lokas tvaM prajApatiH |
tubhyaM yaj~no vijAyate tubhyaM juhvati juhvatas taved viShNo bahudhA vIryANi ||
Then the preceptor gives him the two kUTa-s and decodes them for him:
prAneshaH sugrIvaH saMvartako vaikuNTho dharA tridhAtur vahnir vyApako mahAvidyeshvarI saMyutaM | This is the kUTa of kubjIshAna.
sahajaH paramAtmA nR^isiMhaM kAlarudraM khaDgI sha~NkaraM vahnivarNaM chAMuNDA tUrya-svara-bhUShitaM nAda-bindu-yutaM | This is the kUTa of mahApratya~NgirA.
Then he gives him the mantra weapon with which he battles abhichAra:
chakShuSho hete manaso hete brahmaNo hete tapasash-cha hete ||
He also gives him the brahmaNa parimara mantra for the same purpose.
Then he gives him the para-kAya-praveshaNa mantra of the bhR^igu-s:
taM tvA prapadye taM tvA pravishAmi sarvaguH sarva-puruShaH sarvAtmA sarva-tanUH saha yanme .asti tena ||
If appropriately initiated he can even animate a dreadful vetAla with this mantra.
Then he gives him the mantra of atharvaNa-bhadra-kAlI:
kAlI karAlI cha manojavA cha sulohitA yA cha sudhUmravarNA |
sphuli~NginI vishvaruchI cha devI lelAyamAnA ||
Then he gives him the pUrNa-dIkSha with all the pratya~NgirA mantra-s at pinnacle including the 9-syllabled mantra siddhilakShmI and the deva nyAsa.
[While not imparted to brAhmaNa-s today, the final dIkSha in this series technically is the cremation ground ritual along with the dUtI. One should impart to the dUtI the secret nyAsa and take a war drum and go to the shmashAna. There with the crematory fire one makes oblations to pratya~NgirA with atharvanic mantra-s. Then facing west he and the dUtI draw the pratya~NgirA bhairava-chakra of the 8 special bhairava-s of this system, with avicephalic and therocephalic forms. In the middle they install pratya~NgirA and then enjoying the high rati of maithuna they invoke the great goddess with her secret mantra with the 4 special bhakti-s. Then he recites pratya~NgirA sUkta. With this he becomes the master of the pratya~NgirA lore — even if dhUmAvatI or bagalAmukhI were deployed against him he will back-hurl them.]