Matsya Purana — Cosmography of Śākadvīpa and Successive Dvīpas: Mountains
स एव दुन्दुभिर्नाम श्यामपर्वतसंनिभः शब्दमृत्युः पुरा तस्मिन् दुन्दुभिस्ताडितः सुरैः //
sa eva dundubhirnāma śyāmaparvatasaṃnibhaḥ śabdamṛtyuḥ purā tasmin dundubhistāḍitaḥ suraiḥ //
That very one was named Dundubhi, dark as a blue‑black mountain. In former times he became “death by sound”: the gods struck that Dundubhi like a drum, and his thunderous roar brought terror and destruction.
This verse is not about cosmic Pralaya; it uses the idea of overwhelming sound (‘śabda-mṛtyu’) within a demon-episode, emphasizing destructive power in a localized mythic conflict rather than universal dissolution.
Indirectly, it supports the ethical theme that unchecked violence and terror (here symbolized by deadly sound) must be restrained by rightful protectors; for kings, it echoes the duty to suppress forces that harm society, and for householders, it warns against causing harm through intimidation or disruptive speech.
No direct Vastu or temple-rule appears here; the key ritual-cultural image is the ‘dundubhi’ (drum), highlighting sound as a potent force in Puranic imagination rather than a technical architectural prescription.