This then is how the second ātmā , the individual self, aham that is other than the Creator forms in the womb, mātā and the next shlöka I.2.4 says in the beginning : sah akāmyat dvitīyo ma ātmā jāyeti, sa mansā vācam mithunam….

The mana or the mind reflects from the ādityam and the vāca arises from the prāna ( or agnī-vāyu combine) and the whole play of māyā commences….

This is how the shaktī chakrās of the sūtra I.7 start getting framed.

◊       In the Śiva sūtras matrkā also stands for the string of the alphabet. Now, I present these in the form of a chakrā as shown in Fig. 3.We look at Aitareya Ārānyaka II.3.6 again :

……. ‘a’ is the whole of speech and being manifested through the mutes and the sibilants it becomes manifold and various. If uttered in a whisper it is this prāna, if forcefully, that body – śarīra. Therefore it is hidden, as hidden as the previous body encapsulated in this prāna . But spoken forcefully it is that body and visible, for body is visible.

Now â ( A ) is the immutable, the symbolic Unknown – if this is the whisper, then as we force the breath just a little, what we get is its aspirate sound ah ( A: ) which is the visarga sound. Technically it is not included in the alphabet and is termed ayogavāh or ‘that which is not part of the harness’.