Matsya Purana — Lineage of the Pitṛs
एतेषां मानसी कन्या पत्नी हिमवतो मता मैनाकस्तस्य दायादः क्रौञ्चस्तस्याग्रजो ऽभवत् क्रौञ्चद्वीपः स्मृतो येन चतुर्थो घृतसंवृतः //
eteṣāṃ mānasī kanyā patnī himavato matā mainākastasya dāyādaḥ krauñcastasyāgrajo 'bhavat krauñcadvīpaḥ smṛto yena caturtho ghṛtasaṃvṛtaḥ //
Among these, a mind-born maiden (Mānasī) is regarded as the wife of Himavat. From her, Maināka became his descendant, and Krauñca was born as Maināka’s elder brother. It is after Krauñca that the land known as Krauñca-dvīpa is remembered—the fourth continent, said to be encircled by a sea of clarified butter (ghṛta).
This verse is cosmographic and genealogical rather than pralaya-focused: it explains lineage (Himavat → Maināka → Krauñca) and the naming of Krauñca-dvīpa, including the traditional detail that it is bordered by a ghṛta (clarified butter) ocean.
Indirectly, it supports the Purāṇic ideal that rulers and householders should preserve sacred history (itihāsa-purāṇa memory), including lineages and holy geography, which underpin pilgrimage, donations, and cultural continuity.
No direct Vāstu or temple rule is stated; however, the verse contributes to ritual geography—knowing dvīpas, oceans, and sacred lineages is used in Purāṇic world-mapping, tīrtha conceptions, and cosmological framing of rites.