Matsya Purana — Lineage of Yayāti through Yadu and the Deeds of Kārtavīrya Arjuna
वाराणस्याम् अभूद्राजा कथितं पूर्वमेव तु रुद्रश्रेण्यस्य पुत्रो ऽभूद् दुर्दमो नाम पार्थिवः //
vārāṇasyām abhūdrājā kathitaṃ pūrvameva tu rudraśreṇyasya putro 'bhūd durdamo nāma pārthivaḥ //
In Vārāṇasī there was a king—already spoken of earlier. He was the son of Rudraśreṇya, a ruler named Durdama.
This verse does not discuss pralaya; it is a genealogical note identifying a king of Vārāṇasī and his descent from Rudraśreṇya.
Indirectly, it supports the Purāṇic model of legitimate kingship through lineage and succession—framing rulers as part of an ordered dynastic continuity that underpins dharma in society.
No explicit vastu, temple-building, or ritual procedure is stated; the significance is historical-geographical (Vārāṇasī) and dynastic (naming the ruler and his father).