Matsya Purana — Bhīma-Dvādaśī
*ईश्वर उवाच अस्माद्रथंतरात्कल्पात् त्रयोविंशात् पुनर्यदा वाराहो भविता कल्पस् तस्य मन्वन्तरे शुभे //
*īśvara uvāca asmādrathaṃtarātkalpāt trayoviṃśāt punaryadā vārāho bhavitā kalpas tasya manvantare śubhe //
The Lord said: When, after the twenty-third cycle from this Rathantara Kalpa, the Varāha Kalpa comes again, then, in the auspicious Manvantara of that Kalpa…
It situates events within repeating cosmic cycles (Kalpas and Manvantaras), implying that creation and dissolution recur in a structured chronology, with the Varāha Kalpa returning again after a specified count.
Directly, it does not prescribe royal or household duties; indirectly, it frames dharma within vast cosmic time—Matsya Purana often uses such chronology to contextualize when particular laws, sages, and rulers arise in different Manvantaras.
No Vāstu or ritual procedure is stated in this verse; its significance is chronological—naming the Varāha Kalpa and an auspicious Manvantara, which later texts may use to date rituals, avatāra narratives, or sacred histories.