Mbh 7.17.1

“Sanjaya said, ‘The troops of both the armies, having proceeded to their tents, duly took up their quarters, O king, according to the divisions and the sub-divisions to which they belonged. Having withdrawn the troops, Drona, in great cheerlessness of mind, beholding Duryodhana, said these words in shame: “I told thee before that when Dhananjaya is by Yudhishthira, he is incapable of being seized in battle by the very gods. Although all of you fell upon him in battle, yet Partha frustrated all your attempts. Do not doubt what I say, Krishna and Pandu’s son (Arjuna) are invincible. If, however, Arjuna of white steeds can, by any means, be withdrawn (from Yudhishthira’s side), then Yudhishthira, O king, shall soon come under thy control. Let some one challenging him (Arjuna) in battle draw him away to some other part of the field. The son of Kunti will not return without vanquishing him. Meanwhile, when Arjuna will not be by, O monarch, I will seize king Yudhishthira the just, penetrating through the Pandava host in the very sight of Dhrishtadyumna. Thus, O monarch, I will, without doubt, bring Yudhishthira, the son of Dharma, along with his followers, under control. If that son of Pandu stays even for a moment before me in battle, I will bring him a captive from the field. That feat will be more advantageous than victory (over the Pandava army).”’