Ramayana
सहस्रबाहोस्तद्युद्धं विंशद्बाहोश्च दारुणम् । नृपराक्षसयोस्तत्र चारब्धं रोमहर्षणम् ॥ 7-32-50 ॥
Then there began there a fierce and hair-raising combat between the thousand-armed one and the twenty-armed one, between the king and the rakshasa.
english translation