Detailed meaning of Lalithambigai:

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Pañcadaśī-mantra

The heart, the main mantra of Lalitāmbikā is Pañcadaśī-mantra consisting of fifteen bījas, including these not covered above:

Pañcadaśa means fifteen. Since this mantra has fifteen bījas, it is called Pañcadaśī. Pañcadaśī-mantra is divined in three groups of bījas; each line is called a kūṭa or group. The three kūṭas are vāgbhava-kūṭa, kāmarāja-kūṭa (or madhya-kūṭa) and śakti-kūṭa.

These three kūṭas represent Lalitāmbikā’s whole form. Vāgbhava-kūṭa represents Lalitāmbikā’s face, kāmarāja-kūṭa represents Her torso from neck to hips, and finally śakti-kūṭa represents Her legs and feet. This is one of the reasons why Pañcadaśī-mantra is so powerful. The kūṭas are joined in such a way that an inverted triangle is formed which represents Her yoni, the source of the universe. This is why this Pañcadaśī-mantra is highly confidential. Vāgbhava-kūṭa is the right side of this triangle; kāmarāja-kūṭa the upper side, and śakti-kūṭa forms the left side of the triangle.

Vāgbhava-kūṭa consists of five bījas: क ए ई ल ह्रीं ka e ī la hrīṁ

Madhya-kūṭa consists of six bījas: ह स क ह ल ह्रीं ha sa ka ha la hrīṁ

Śakti-kūṭa consists of four bījas: स क ल ह्रीं sa ka la hrīṁ

Thus, we have fifteen bījas in Pañcadaśī. This mantra is not revealed by these bījas, but by the following Sanskrit verse:

kāmo yoniḥ kamalā vajrapāṇirguhāhasā matariśvābhrāmindraḥ|punarguhāsakala māyayā ca purucyeṣā viśvamātādividyā||

“Kāma, Yoni, Kamala, Vajrapani (Indra), Guha, Hamsa, Matarishva, Abhra, Indra, Punarguha, Sakala and Māyā are also mantras of the Mother of Universe, who is undoubtedly Brahman.”

The fifteen bījas of Pañcadaśī are hidden in this verse. This is a clear indication of the highly secretive nature of this mantra. From this verse, the fifteen bījas of Pañcadaśī are derived thus:

kāman (ka) yoni: (e) kamalā (ī)vajrapāniṛ (la)-guhā (hrīṃ) ha (ha) sā (sa) mathariśvā (ka) abram (ha) indraḥ (la)| punar (means again) guhā (hrīṃ) sakala (sa, ka, la) māyayā ca (hrīṃ) purucyeṣā viśvamātādividyā