Matsya Purana — Ila–Sudyumna Episode and the Expansion of the Ikṣvāku
भगीरथस्य तनयो नाभाग इति विश्रुतः नाभागस्याम्बरीषो ऽभूत् सिन्धुद्वीपस् ततो ऽभवत् //
bhagīrathasya tanayo nābhāga iti viśrutaḥ nābhāgasyāmbarīṣo 'bhūt sindhudvīpas tato 'bhavat //
Bhagīratha’s son was renowned as Nābhāga. From Nābhāga was born Ambarīṣa, and from him thereafter arose Sindhudvīpa.
This verse does not discuss Pralaya; it preserves dynastic memory by listing successive kings in Bhagīratha’s line.
By recording rightful succession, the Matsya Purana supports the dharmic ideal of legitimate kingship—rule and inheritance transmitted through recognized lineage.
No Vāstu, temple-building, or ritual procedure is stated here; the verse is strictly genealogical.