Ramayana
तावन्योन्यं जिघृक्षन्तौ हरिराक्षसपार्थिवौ । प्रयत्नवन्तौ तत्कर्म ईहतुर्बलदर्पितौ ॥ 7-34-19 ॥
Meanwhile those two lords, the monkey and the rakshasa, each eager to seize the other, both exerting themselves and proud of their strength, strove to accomplish that very deed.
english translation