Shiva Purana
कोलानाम्नीं राजधानीं रुरुधुस्तस्य भूपतेः ॥ तैस्समन्तुमुलं युद्धं समपद्यत दारुणम्॥ १७॥
They laid siege to his capital Kolā. The king had a terrible war with them.
english translation
kolAnAmnIM rAjadhAnIM rurudhustasya bhUpateH ॥ taissamantumulaM yuddhaM samapadyata dAruNam॥ 17॥
hk transliteration by Sanscript