Matsya Purana — Emergence of Brahmā from the Golden Lotus and the Lotus-Form Earth
एतेषामन्तरे देशो जम्बूद्वीप इति स्मृतः जम्बूद्वीपस्य संस्थानं यज्ञिया यत्र वै क्रियाः //
eteṣāmantare deśo jambūdvīpa iti smṛtaḥ jambūdvīpasya saṃsthānaṃ yajñiyā yatra vai kriyāḥ //
The land lying in between these (regions) is remembered as Jambūdvīpa. There is the ordered formation of Jambūdvīpa, the place where sacrificial rites are indeed performed.
It does not describe Pralaya directly; it situates Jambūdvīpa as the central, ritually active realm of the world-order, implying a stable cosmic geography rather than dissolution.
By identifying Jambūdvīpa as the land where yajñas are performed, it frames human society’s central duty as maintaining dharma through Vedic rites—responsibilities traditionally upheld by householders and protected/sponsored by kings.
The key ritual point is that Jambūdvīpa is defined as a zone of yajñakriyā (sacrificial performance); the term saṃsthāna also hints at an ordered layout—useful for reading later Vāstu/space-order ideas as part of a sacralized geography.