Matsya Purana — Genealogy of Kaśyapa: Ādityas
तत एकोनपञ्चाशन् मरुतः कश्यपाद्दितिः जनयामास धर्मज्ञान् सर्वानमरवल्लभान् //
tata ekonapañcāśan marutaḥ kaśyapādditiḥ janayāmāsa dharmajñān sarvānamaravallabhān //
Then Diti, by Kaśyapa, gave birth to forty-nine Maruts—each a knower of dharma, and all beloved of the immortals (the gods).
It belongs to the creation-and-lineage (sarga) material, describing the birth of divine beings (the Maruts), not the flood or dissolution (pralaya) episode.
By praising the Maruts as “dharma-knowers,” the verse reinforces the Purāṇic ideal that even powerful beings are guided by dharma—an implicit model for kingship (rājadharma) and household conduct (gṛhastha-dharma).
No direct Vāstu or temple-architecture rule is stated; the verse is primarily genealogical, though the Maruts are often invoked in Vedic-Purāṇic ritual contexts as deities of wind and storm.