Mbh 3.22.1b

Then those foremost of heroes of the Vrishni race who were of my army were, struck with panic, and all on a sudden began to fly in all directions. And beholding me in that plight, O king, the heaven, the firmament, and the earth were filled with exclamation of Oh! and Alas! And then, O monarch, my friends filled with sorrow and grief began to weep and wail with heavy hearts! And delight filled the hearts of the enemies. And O thou who never waverest, I heard of this after I had defeated the foe! And then wielding the thunderbolt, that favourite (weapon) of Indra, capable of riving stones, I destroyed that entire mass of crags! But my steeds, afflicted with the weight of the stones and almost on the point of death began to tremble. And beholding me, all my friends rejoiced again even as men rejoice on seeing the sun rise in the sky, dispersing the clouds. And seeing my horses almost in their last gasp for breath, afflicted with that load of stones, my charioteer said unto me in words suitable to the occasion, ‘O thou of the Vrishni race, behold Salwa the owner of the car of precious metals sitting (yonder). Do not disregard him! Do thou exert thyself! Do thou abandon thy mildness and consideration for Salwa. Slay Salwa, O thou of mighty arms! O Kesava, do not let him live! O hero, O thou destroyer of those that are not thy friends (enemies), an enemy should be slain with every exertion! Even a weak enemy who is under the feet of a man endued with strength, should not be disregarded by the latter: that (shall I say) of one that dareth us to the fight? Therefore, O thou tiger among men, putting forth every exertion, slay him, O lord, O thou foremost of the Vrishni race! Do thou not delay again! This one is not capable of being vanquished by milder measures. And he cannot in my opinion be thy friend who is fighting thee and who devastated Dwaraka!’