Ramayana
अध्वना दुर्विगाहेन योजनानि चतुर्दश । ततस्तमप्यतिक्रम्य वैद्युतो नाम पर्वतः ॥ ४-४१-३३
It is at a distance of fourteen yojanas and it is difficult to cover that distance. Going beyond that mountain lies Vaidyuta - [4-41-33]
english translation
adhvanA durvigAhena yojanAni caturdaza । tatastamapyatikramya vaidyuto nAma parvataH ॥ 4-41-33
hk transliteration by Sanscript