Matsya Purana — Ila–Sudyumna Episode and the Expansion of the Ikṣvāku
जगामेलावृतं भोक्तुं वर्षं दिव्यफलाशनम् इक्ष्वाकुर्ज्येष्ठदायादो मध्यदेशमवाप्तवान् //
jagāmelāvṛtaṃ bhoktuṃ varṣaṃ divyaphalāśanam ikṣvākurjyeṣṭhadāyādo madhyadeśamavāptavān //
Ikṣvāku’s eldest heir went to enjoy the region of Elāvṛta, that varṣa where one lives on divine fruits; and he also obtained Madhyadeśa, the central country.
This verse does not describe Pralaya; it focuses on post-mythic human geography and dynastic movement—how an Ikṣvāku heir is associated with Elāvṛta and Madhyadeśa.
Indirectly, it reflects royal succession (jyeṣṭha-dāyāda) and the settling/obtaining of a realm—core concerns of kingship in Purāṇic polity: rightful inheritance and establishing rule in a defined territory.
No Vāstu or ritual procedure is stated here; the technical point is geographical—identifying regions (varṣa, Madhyadeśa) often used elsewhere to contextualize where dharma, rites, and royal capitals are established.