Anuvaka 9

TS 2.5 functions as a dense operational node in the Śrauta calendar by formalizing the monthly hinge between amāvāsyā and paurṇamāsī. It integrates mythic etiologies (arthavāda) with executable vidhi: the Sānnāyya logic of “milk-to-Soma” equivalence, the metrical engineering of Sāmidhenī recitations, and the spatial-temporal choreography of āghāra and priestly selection (pravaravaraṇa). The prapāṭhaka also encodes ritual geometry: triadic repetitions map to the three worlds and three vital currents; fifteenfold structures map to half-month nights; and the alternation of new/full moon becomes a calendrical “vehicle” (devaratha) for ascent. By embedding social typologies (kṣatra/viś/brahman) into stoma-count and chandas choices, it links polity to liturgical form. Overall, TS 2.5 is a procedural bridge-text: it turns cosmology into repeatable monthly action with explicit safeguards against mis-sequencing and mis-addressed speech.