Mahabharata 7.165.121

न हन्तव्यो न हन्तव्य इति ते सर्वतोऽब्रुवन्तथैव चार्जुनो वाहादवरुह्यैनमाद्रवत्

na hantavyo na hantavya iti te sarvato'bruvantathaiva cārjuno vāhādavaruhyainamādravat

Our plain-language meaning of this verse is waiting for scholar review.