Matsya Purana — Description of Gomedaka and Puṣkara Dvīpas; the Lokāloka Boundary; Ocean Tide...
कुमुदं तूत्तरे तस्य द्वितीयं वर्षमुत्तमम् एतौ जनपदौ द्वौ तु गोमेदस्य तु विस्तृतौ //
kumudaṃ tūttare tasya dvitīyaṃ varṣamuttamam etau janapadau dvau tu gomedasya tu vistṛtau //
To its north lies Kumuda, the second and excellent varṣa. These two are the broad and extensive janapadas of Gomeda.
This verse is not about Pralaya; it belongs to cosmographic description, mapping regions (varṣas) and territories (janapadas) within the Purāṇic world-structure.
Indirectly, it frames the idea of janapadas (territories) as organized realms—useful background for kingship in the Purāṇas, where a ruler’s dharma includes protecting and administering well-defined lands and peoples.
No direct Vāstu or ritual procedure is stated; the significance is geographic—identifying named regions that later Purāṇic traditions may associate with pilgrimage networks and sacred topographies.