Matsya Purana — Measures of Time: Caturyuga Computation
क्रमागतं मयाप्येतत् तुभ्यं नोक्तं युगद्वयम् ऋषिवंशप्रसङ्गेन व्याकुलत्वात्तथा क्रमात् //
kramāgataṃ mayāpyetat tubhyaṃ noktaṃ yugadvayam ṛṣivaṃśaprasaṅgena vyākulatvāttathā kramāt //
Although this topic arose in proper sequence, I did not tell you of the two yugas, because—preoccupied with the episode concerning the lineage of the ṛṣis—I proceeded in that order and was distracted by that digression.
This verse does not directly describe pralaya; it clarifies the narrator’s sequencing—stating that discussion of “two yugas” was deferred due to a digression into sage-lineages.
Indirectly, it models dharmic instruction through orderly teaching: a king like Manu is being guided via structured narration (krama), emphasizing that governance and learning require attention to proper sequence and context.
No explicit Vāstu or ritual rule appears in this verse; its significance is textual—signposting a transition back toward a yuga-based teaching after the ṛṣivaṃśa (lineage) digression.