Mbh 7.142.6

“‘Satyaki said, “Ye sinful Kauravas, wearing the outward garment of righteousness, ye tell me, in words of virtue, that Bhurisravas should not be slain. Where, however, did this righteousness of yours go when ye slew in battle that child, viz., the son of Subhadra, while destitute of arms? I had in a certain fit of haughtiness vowed that he who would, throwing me down alive in battle, strike me with his foot in rage, he would be slain by me even though that foe should adopt the vow of asceticism. Struggling in the encounter, with my arms and eyes hale and sound, ye had yet regarded me as dead. This was an act of folly on your part. Ye bulls among the Kurus, the slaughter of Bhurisravas, accomplished by me, hath been very proper! Partha, however, by cutting off this one’s arm with sword in grasp for fulfilling, from his affection for me, his own vow (about protecting all on his side), hath simply robbed me of glory. That which is ordained must happen. It is destiny that works. Bhurisravas hath been slain in press of battle. What sin have I perpetrated? In days of yore, Valmiki sang this verse on earth, viz., ‘Thou sayest, O ape, that women should not be slain. In all ages, however, men should always, with resolute care, accomplish that which gives pain to enemies.’”’