Ramayana
दण्डस्य विषयो यावत्तावत्सर्वसमुच्छ्रयम् । पांसुवर्षमिवालक्ष्यं सप्तरात्रं भविष्यति ॥ 7-81-10 ॥
As far as Danda's realm extends, so far, over everything that rises up, there shall be for seven nights a rain of dust, like a thing unseen.
english translation