Mahabharata 5.178.32

5.178.32

tatra tvaṃ nihato rāma mayā śaraśatācitaḥ |
lapsyase nirjitām̐llokāñśastrapūto mahāraṇe || 32 ||

It is well-known truth, gatherable from the scriptures, that he is not guilty of slaying a Brahmana who killeth in battle a person of that order that taketh up weapons like Kshatriya and fighteth wrathfully without seeking to fly. I am a Kshatriya stationed in the practice of Kshatriya duties. One doth not incur sin, nor doth one incur any harm by behaving towards a person exactly as that person deserveth. When a person acquainted with the proprieties of time and place and well-versed in matters affecting both profit and virtue, feels doubtful, as regards anything, he should without scruples of any kind, devote himself to the acquisition of virtue which would confer the highest benefit on him. And since thou, O Rama, in a matter connected with profit of doubtful propriety, actest unrighteously, I would certainly fight with thee in a great battle. Behold the strength of my arms and my prowess that is superhuman! In view of such circumstances, I shall certainly do, O son of Bhrigu, what I can. I shall fight with thee, O regenerate one, on the field of Kurukshetra! O Rama of great effulgence, equip thyself as thou listest for single combat! Come and station thyself on the field of Kurukshetra where, afflicted with my shafts in great battle, and sanctified by my weapons, thou mayest obtain those regions that have been won by thee (thought for thy austerities). O thou of mighty arms and wealth of asceticism, there I will approach thee for battle,--thee that art so fond of battle!