Matsya Purana — Ila–Sudyumna Episode and the Expansion of the Ikṣvāku
इलस्य नाम्ना तद्वर्षम् इलावृतम् अभूत्तदा सोमार्कवंशयोर् आदाव् इलो ऽभून्मनुनन्दनः //
ilasya nāmnā tadvarṣam ilāvṛtam abhūttadā somārkavaṃśayor ādāv ilo 'bhūnmanunandanaḥ //
That region then came to be called Ilāvṛta after Ila; and Ila—Manu’s beloved child—became the first progenitor at the beginning of both the Lunar and the Solar dynastic lines.
This verse does not describe Pralaya; it shifts to post-cosmic-order history, naming Ilāvṛta and situating Ila as a foundational link in dynastic genealogy.
By emphasizing dynastic origins, it reinforces the Purāṇic ideal that kingship is sustained through legitimate lineage, continuity of dharma, and responsible succession—key concerns for rulers and householders preserving family order.
No Vāstu or ritual procedure is stated here; the verse is primarily geographic and genealogical, providing context often used in Purāṇas to anchor later rites and royal foundations to sacred lineages.