Ramayana
विशालकक्ष्या दुर्धर्षा सर्वतः परिरक्षिता । रक्षिता पन्नगैर्घोरैस्तीक्ष्णदष्ट्रैरैर्महाविषैः ॥ ४-४१-३८
'It has wide corridors. Guarded on all sides, it is unassailable since it is protected by venomous serpents with sharp fangs. ॥ 4-41-38॥
english translation
vizAlakakSyA durdharSA sarvataH parirakSitA । rakSitA pannagairghoraistIkSNadaSTrairairmahAviSaiH ॥ 4-41-38
hk transliteration by Sanscript