Anjanaparvan

Afflicted with showers of shafts by Bhimasena's grandson, viz., the brave Anjanaparvan, Aswatthaman looked like the mountain Meru bearing a torrent of rain from a mighty cloud.

Then Aswatthaman, equal unto Rudra or Upendra in prowess, became filled with rage.

1. With one shaft he cut off the standard of Anjanaparvan. 
2. With two others, his two drivers, and 
3. with three others, his Trivenuka. And he cut off the Rakshasa's bow with one arrow, and 
4. his four steeds with four other arrows, 

Made carless, Anjanaparvan took up a scimitar. With another keen shaft, Aswatthaman cut off in two fragments that scimitar, decked with golden stars, in the Rakshasa's hand. 

The grandson of Hidimva then, O king, whirling a gold adorned mace, quickly hurled it at Aswatthaman. Drona's son, however, striking it with his shafts, caused it to fall down on the earth. 

Soaring up then into the sky, Anjanaparvan began to roar like a cloud. And from the welkin he showered trees upon his foe. Like the sun piercing a mass of clouds with his rays, Aswatthaman then began to pierce with his shafts the son of Ghatotkacha, that receptacle of illusions, in the welkin. Gifted with great energy, the Rakshasa once more came down on his gold decked car. He then looked like a high and beautiful hill of antimony on the surface of the earth. The son of Drona then slew that son of Bhima's son, viz., Anjanaparvan, cased in an iron coat of mail

Source
http://www.sacred-texts.com/hin/m07/m07152.htm