Matsya Purana — Pṛthu
सुनीथा नाम तस्यास्तु वेनो नाम सुतः पुरा अधर्मनिरतश्चासीद् बलवान् वसुधाधिपः //
sunīthā nāma tasyāstu veno nāma sutaḥ purā adharmanirataścāsīd balavān vasudhādhipaḥ //
Her name was Sunīthā; and in former times her son was named Vena. He was devoted to unrighteousness, yet powerful as a lord of the earth.
This verse does not describe Pralaya; it belongs to the dynastic narrative, introducing Vena as a powerful king inclined toward adharma.
By contrasting royal power with devotion to adharma, it implies that kingship is not validated by strength alone—righteous conduct (dharma) is essential for legitimate rule in the Matsya Purana’s ethical framing.
No Vastu, temple-building, or ritual procedure is mentioned; the verse functions as a genealogical and moral characterization within the royal lineage account.