 कामं त्वमसि पर्याप्तो निहन्तुं सर्वराक्षसान्।राघवस्य यशो हीयेत्त्वया शस्तैस्तु राक्षसैः।। 
 "It may be that you can kill  all the demons but by such an act the fame of Rama will be diminished. He cannot give his strength a trial 