Ramayana
शृङ्गैरिव वृषायुध्यन्दन्ताग्रैरिव कुञ्जरौ । परस्परं तौ निघ्नन्तौ नरराक्षससत्तमौ ॥ 7-32-59 ॥
Fighting like bulls with their horns, like elephants with the points of their tusks, those two best of beings—the man and the rakshasa—struck at each other.
english translation