Mbh 7.90.2a

“Sanjaya continued, ‘Thus addressed by him, the preceptor, smiling, replied unto him, saying, “O Vibhatsu, without vanquishing me, thou shalt not be able to vanquish Jayadratha.” Telling him this much, Drona, with a smile covered him with showers of sharp arrows, as also his car and steeds and standard and charioteer. Then, Arjuna baffling Drona’s arrowy showers with his own arrows, rushed against Drona, shooting mightier and more awful shafts. Observant of Kshatriya duties, Arjuna then pierced Drona in that battle with nine arrows. Cutting the shafts of Arjuna by his own shafts, Drona then pierced both Krishna and Arjuna with many shafts that resembled poison or fire. Then, while Arjuna was thinking of cutting off Drona’s bow with his arrows, the latter, endued with great valour, fearlessly and quickly cut off with shafts the bow-string of the illustrious Phalguna. And he also pierced Phalguna’s steeds and standard and charioteer. And the heroic Drona covered Phalguna himself with many arrows, smiling the while. Meantime, stringing his large bow anew, Partha, that foremost of all persons conversant with arms, getting the better of his preceptor, quickly shot six hundred arrows as if he had taken and shot only one arrow. And once more he shot seven hundred other arrows, and then a thousand arrows incapable of being resisted, and ten thousand other arrows. All these slew many warriors of Drona’s array. Deeply pierced with those weapons by the mighty and accomplished Partha, acquainted with all modes of warfare, many men and steeds and elephants fell down deprived of life. And car-warriors, afflicted by those shafts, fell down from their foremost of cars, deprived of horses and standards and destitute of weapons and life. And elephants fell down like summits of hills, or masses of clouds, or large houses, loosened, dispersed, or burnt down by the thunder, or by the wind, or fire.