Ramayana
अकम्पनवच श्रुत्वा रावणो राक्षसाधिपः । नागेन्द्र इव निःश्वस्य वचनं चेदमब्रवीत् ॥ ३-३१-१२
Having heard Akampana's words, Ravana, the lord of demons, sighed heavily like the king of serpents and said these words ॥ 3-31-12॥
english translation
akampanavaca zrutvA rAvaNo rAkSasAdhipaH । nAgendra iva niHzvasya vacanaM cedamabravIt ॥ 3-31-12
hk transliteration by Sanscript