Ramayana
कुम्भकर्णस्तु दुष्टात्मा नानाप्रहरणोद्यतः । नाज्ञायत तदा युद्धे सह केनाप्ययुध्यत ॥ 7-28-34 ॥
But the evil-souled Kumbhakarna, brandishing manifold weapons, was then in that battle not even aware with whom he was fighting.
english translation