Matsya Purana — Nārāyaṇa as Haṃsa in the Cosmic Ocean: Vedic Yajña-Puruṣa and Mārkaṇḍeya’s Vi...
कः समुत्सहते चान्यो यो न भूतात्मकात्मजः द्रष्टुमेकार्णवगतं क्रीडन्तं योगवर्त्मना //
kaḥ samutsahate cānyo yo na bhūtātmakātmajaḥ draṣṭumekārṇavagataṃ krīḍantaṃ yogavartmanā //
Who else could even dare to behold Him—unless he is born of the very essence of the elements—when He sports within the single, all-encompassing cosmic ocean, moving along the path of Yoga?
It depicts the ekārṇava—the single cosmic ocean associated with dissolution—where the Lord remains present and sovereign, “sporting” beyond ordinary perception, accessible only through a yogic mode of vision.
Indirectly, it sets a standard of humility and discipline: even rulers like Manu are reminded that divine realities are not grasped by power or status, but by inner purification and yogic restraint—key virtues for righteous kingship and household life.
No direct Vāstu or temple-rule detail appears; the takeaway is ritual-spiritual: true “darśana” (vision) of the deity is framed as yogic attainment rather than merely external ceremony.