Mahabharata 8.16.1

8.16.1

dhṛtarāṣṭra uvāca |
pāṇḍye hate kimakarodarjuno yudhi saṃjaya |
ekavīreṇa karṇena drāviteṣu pareṣu ca || 1 ||

"Dhritarashtra said, 'When Pandya had been slain and when that foremost of heroes, viz., Karna was employed in routing and destroying the foe, what, O Sanjaya, did Arjuna do in battle? That son of Pandu is a hero, endued with great might, attentive to his duties, and a complete master of the science of arms. The high-souled Sankara himself hath made him invincible among all creatures. My greatest fears proceed from that Dhananjaya, that slayer of foes. Tell me, O Sanjaya, all that Partha achieved there on that occasion.'