Matsya Purana — The Attendant Hosts of the Sun and Moon: Monthly Gaṇas
रथंतरश्च ग्रामण्यौ रथकृच्चैव तावुभौ पुरुषादो वधश्चैव यातुधानौ तु तौ स्मृतौ //
rathaṃtaraśca grāmaṇyau rathakṛccaiva tāvubhau puruṣādo vadhaścaiva yātudhānau tu tau smṛtau //
Rathaṃtara and Grāmaṇya, as well as Rathakṛt—these two; and likewise Puruṣāda and Vadha—these two—are remembered as Yātudhānas (demonic beings).
This verse does not describe Pralaya directly; it functions as a classificatory list, identifying certain named figures as Yātudhānas (a rākṣasa/demonic class) within the Purana’s broader cosmological and genealogical mapping.
Indirectly, it supports dharma by distinguishing harmful, antisocial beings (e.g., Puruṣāda, ‘man-eater’) from righteous society—knowledge a king uses in protecting subjects and maintaining order, and a householder uses in ethical discernment.
No Vastu Shastra or ritual procedure is stated here; the verse is a name-and-class identification (Yātudhāna taxonomy), not a temple-building or rite instruction.