The next two layers are Mar & Marīchi and governed by the Yajur veda – krishna (dark) and Yajur veda – shukla (light) respectively. Motilal Shastriji writes that the word Yajuh is the combination of both the vowels ‘i’ and ‘u’.
The Mar region is the non-visible region where the ‘dark matter’ exists and since it is not directly visible or vyāpak – it can only be inferred. This is the letter ‘u’. This is the Pitrlok externally and all these measurements in the mind internally can be confabulated upon creating a higher combination of infinities. Here, we build upon the observational part by continuous vimarsha. This region is the Sushupta, the next layer of our internal consciousness. It is akin to deep sleep where all the continuous processes of the body and mind connect. These connections belong to the higher ‘ind-enumerable infinite’ ‘shh’. Thus, the svar ‘u’ and ‘shh’ combine to give Uṣhā and the whole body of knowledge called Tantra comprises this domain. Thus from ‘sh’ to ‘shh’ we go by vimarsha.