Matsya Purana — Glory of Tīrtha-Śrāddha: Best Times
पापं कुत्सितमित्याहुस् तस्य संतापकारिणः अष्टाव् एते यतस्तस्मात् कुतपा इति विश्रुताः //
pāpaṃ kutsitamityāhus tasya saṃtāpakāriṇaḥ aṣṭāv ete yatastasmāt kutapā iti viśrutāḥ //
Sin is called ‘kutsita’—base and reprehensible—because it brings torment; therefore these eight are renowned as ‘kutapā’, as they belong to that torment-causing class.
This verse is not about pralaya; it defines pāpa as ‘kutsita’ because it brings saṃtāpa (torment), framing karma as an ethical cause-and-effect rather than a cosmological event.
It grounds rājadharma and gṛhastha-dharma in karmaphala: actions labeled as pāpa are ‘reprehensible’ specifically because they generate suffering—so governance and daily conduct should avoid those torment-causing categories (here summarized as an ‘eightfold’ class).
No direct vāstu or temple-rule detail appears in this verse; its ritual relevance is ethical—purificatory rites and expiations (prāyaścitta) are implied as responses to pāpa that causes saṃtāpa.