Matsya Purana — Paurava Genealogy
शंतनोर्दयितं पुत्रं शान्तात्मानमकल्मषम् कृष्णद्वैपायनो नाम क्षेत्रे वैचित्रविर्यके //
śaṃtanordayitaṃ putraṃ śāntātmānamakalmaṣam kṛṣṇadvaipāyano nāma kṣetre vaicitraviryake //
In the lineage-field of Vicitravīrya there was born one named Kṛṣṇa-Dvaipāyana—Śantanu’s beloved son—of tranquil spirit and stainless, free from all impurity.
This verse is not about Pralaya; it belongs to the dynastic-genealogical narration, identifying Kṛṣṇa-Dvaipāyana (Vyāsa) and his stainless, tranquil nature in the Vicitravīrya lineage context.
Indirectly, it supports the Purāṇic emphasis on lineage continuity and righteous progeny: the appearance of a pure-minded sage (Vyāsa) is presented as pivotal for preserving dharma and royal succession through legitimate lineage frameworks.
No Vāstu or temple-architecture rule is stated here; the verse is genealogical, naming Vyāsa and situating him within the Vicitravīrya-related lineage narrative.