Matsya Purana — Saptamī Sacred Bath and the Mṛtavatsābhiṣeka Rite for Pacifying Misfortune an...
पञ्चमं च पुनर्मध्ये दध्यक्षतविभूषितम् स्थापयेदव्रणं कुम्भं सप्तर्चेनाभिमन्त्रितम् //
pañcamaṃ ca punarmadhye dadhyakṣatavibhūṣitam sthāpayedavraṇaṃ kumbhaṃ saptarcenābhimantritam //
And then, in the middle, one should place the fifth vessel, adorned with curd and unbroken grains of rice; one should set there a flawless (undamaged) water-pot (kumbha), consecrated by the seven-verse hymn (Saptarcā).
This verse is not about Pralaya; it focuses on precise ritual placement and consecration of a kumbha, emphasizing purity and correct procedure rather than cosmology.
It reflects the householder/royal duty of performing rites with cleanliness and correctness—using unbroken offerings (akṣata), a blemish-free vessel, and proper mantras—supporting dharma through disciplined worship.
Ritually, it prescribes central placement (madhye) of a flawless kumbha, decorated with dadhi and akṣata and empowered by the Saptarcā—key steps in kumbha-sthāpana and abhiṣeka-oriented worship.