Matsya Purana — Manvantaras
एते मन्त्रकृतः सर्वे काश्यपांस्तु निबोधत काश्यपः सहवत्सारो नैध्रुवो नित्य एव च //
ete mantrakṛtaḥ sarve kāśyapāṃstu nibodhata kāśyapaḥ sahavatsāro naidhruvo nitya eva ca //
Know that all these are Kāśyapa-type forms “made by mantra” (mantra-kṛta, consecrated through mantra). Understand the Kāśyapa classifications: Kāśyapa, Sahavatsāra, Naidhruva, and also Nitya.
This verse is not about Pralaya; it focuses on ritual-technical classification of ‘mantra-made’ (mantrakṛta) forms used in consecration and iconographic taxonomy.
It supports dharmic patronage: a king or householder who commissions worship should ensure icons/ritual forms are properly established ‘by mantra’ and according to recognized classifications, aligning patronage with śāstric procedure.
Ritually, it identifies a set of mantra-consecrated categories (Kāśyapa, Sahavatsāra, Naidhruva, Nitya), indicating that installation and worship should follow specific śāstric types—key for Matsya Purana temple iconography rules.