Skanda Purana — Nagara Khanda, Shloka 16
ततः समुद्रनाशाय मंत्रं चक्रुः सुदुःखिताः । तस्मिन्नष्टे भवन्त्येव वध्या दानवसत्तमाः
tataḥ samudranāśāya maṃtraṃ cakruḥ suduḥkhitāḥ | tasminnaṣṭe bhavantyeva vadhyā dānavasattamāḥ
แล้วเหล่าเทพผู้โศกเศร้าอย่างยิ่งได้รจนามนตร์เพื่อทำลายมหาสมุทร; เพราะเมื่อสมุทรสูญสิ้น แม้เหล่าทานวะผู้ประเสริฐก็ย่อมตกเป็นผู้พึงถูกสังหารได้
Narrator (deduced; not explicit in snippet)
Scene: Devas, grief-stricken yet resolute, convene on a stormy shore; they compose/empower a mantra aimed at ‘ocean-destruction,’ envisioning the dānavas becoming vulnerable once the sea barrier is removed.
FAQs
Mantra (sacred power) is presented as a dhārmic instrument when ordinary means cannot restore order.
Not named in this verse; it advances the Tīrthamāhātmya storyline tied to coastal sacred geography.
The crafting/using of a mantra is mentioned generally; no specific japa count, rite, or vidhi is given here.