Matsya Purana — The Sun-Vow
दक्षिणे ऽर्यमनामानं मार्तण्डं पश्चिमे दले उत्तरे तु रविं देवं कर्णिकायां च भास्करम् //
dakṣiṇe 'ryamanāmānaṃ mārtaṇḍaṃ paścime dale uttare tu raviṃ devaṃ karṇikāyāṃ ca bhāskaram //
On the southern side one should place Aryaman; on the western petal, Mārtaṇḍa; on the northern side, the god Ravi; and in the central pericarp (the core), Bhāskara.
This verse does not teach Pralaya directly; it gives a ritual-architectural rule (nyāsa) for arranging forms of the Sun in a lotus-mandala by directions and center.
It supports dharmic duties through correct worship and consecration practices—kings and householders commissioning temples or performing rites are instructed to place deities according to directional order to maintain ritual correctness.
It specifies directional placement in a lotus diagram: Aryaman in the south, Mārtaṇḍa in the west petal, Ravi in the north, and Bhāskara in the central karṇikā—guiding yantra design, installation, and temple/altar iconographic layout.