Matsya Purana — The Rite and Glory of Meru-Dāna: The Tenfold ‘Gift of Meru’ and Mountain-Offe...
पूर्वेण हस्तमितमत्र विधाय कुण्डं कार्यस्तिलैर्यवघृतेन समित्कुशैश्च रात्रौ च जागरमनुद्धतगीततूर्यैर् आवाहनं च कथयामि शिलोच्चयानाम् //
pūrveṇa hastamitamatra vidhāya kuṇḍaṃ kāryastilairyavaghṛtena samitkuśaiśca rātrau ca jāgaramanuddhatagītatūryair āvāhanaṃ ca kathayāmi śiloccayānām //
Here, on the eastern side, one should construct a kuṇḍa (fire-pit) measuring one cubit. It is to be prepared with sesame, barley, and ghee, along with fuel-sticks and kuśa grass. One should keep a night-long vigil with restrained singing and instrumental music; and now I shall explain the rite of invocation (āvāhana) for the śiloccaya, the stone-heaps/stone-structures.
This verse is not about Pralaya; it gives a technical ritual directive—how to set up a one-cubit fire-pit on the east and perform a restrained night vigil as part of invoking a sacred stone structure.
It frames dharma as disciplined ritual conduct: the patron (king/householder) should follow precise measurements, proper materials (til, yava, ghṛta, samit, kuśa), and controlled celebration (anuddhata gīta-tūrya) while sponsoring consecration rites.
It specifies Vastu-ritual protocol: an east-placed, one-cubit kunda and prescribed offerings, plus a night-long jāgara, culminating in āvāhana for the śiloccaya—indicating formal consecration/activation of a stone altar or stone-built sacred element.