Matsya Purana — Manvantaras
अङ्गुलानामष्टशतम् उत्सेधो हस्तिनां स्मृतः अङ्गुलानां सहस्रं तु द्विचत्वारिंशदङ्गुलम् //
aṅgulānāmaṣṭaśatam utsedho hastināṃ smṛtaḥ aṅgulānāṃ sahasraṃ tu dvicatvāriṃśadaṅgulam //
The prescribed height (utsedha) of elephants is said to be eight hundred aṅgulas; and, by the larger standard, it is one thousand aṅgulas—namely, forty-two aṅgulas above the base measure.
This verse does not discuss Pralaya; it is a technical rule on measurement (aṅgula-based height) used in iconography/architectural standards.
Indirectly, it supports dharmic patronage: kings and householders commissioning temples or sacred art are advised to follow authoritative proportional canons so that construction and consecration are performed correctly.
It gives a canonical height standard in aṅgulas for elephant forms, useful for temple sculpture, decorative programs, or ritual imagery where correct proportions (utsedha) are required by Vastu/Śilpa norms.