Mbh 5.197.2a

“Yudhishthira said, ‘The spies I had placed in the army of Dhritarashtra’s son, brought me this news in the morning. Duryodhana asked Ganga’s son of great vows, saying, “O lord, in what time canst thou annihilate the troops of Pandu’s sons?” Indeed, the wicked Duryodhana was answered by him in these words, viz.,--In a month! Drona also declared that he could do the same feat in about the same time. Gautama (Kripa) indicated twice that period, as hath been heard by us. Drona’s son acquainted with weapons of high efficacy declared the period (in his case) to be ten nights. Karna also, acquainted with weapons of high efficacy, asked in the midst of the Kurus, declared that thy could complete the slaughter in five days. Therefore, I also, O Arjuna, am desirous of hearing thy words. In what time canst thou, O Falguni, exterminate the foe?’ Thus addressed by the king, Dhananjaya of curly hair, casting a look upon Vasudeva, said these words, ‘All these (Bhishma and others) are high-souled (warriors), accomplished in arms and acquainted with all modes of warfare. Without doubt, O king, they can exterminate (our forces) even thus! Let thy heart’s anguish, however, be dispelled. I tell thee truly that with Vasudeva as my ally, I can, on a single car, exterminate the three worlds with even the immortals, indeed, all mobile creatures that were, are, will be, in the twinkling of the eye. This is what I think. That terrible and mighty weapon which the Lord of all creatures (Mahadeva) gave me on the occasion of my hand-to-hand encounter with him (in the guise of) a hunter, still existeth with me. Indeed, O tiger among men, that weapon which the Lord of all creatures useth at the end of Yuga for destroying created things, existeth with me. Ganga’s son knoweth not that weapon; nor Drona nor Gautama (Kripa); nor Drona’s son, O king! How, therefore, can the Suta’s son know it? It is not, however, proper to slay ordinary men in battle by means of celestial weapons.