Mbh 3.47.1b

Those Rishis of blazing splendour have, O Brahmarshi, at my desire, been born on earth, and endued with mighty energy, will lighten the burden thereof. Besides this, there are certain Asuras known as Nivatakavachas, who, proud of the boon they have acquired, are employed in doing us injuries. Boastful of their strength, they are even now planning the destruction of the gods, for, having received a boon, they no longer regard the gods. Those fierce and mighty Danavas live in the nether regions. Even all the celestials together are incapable of fighting with them. The blessed Vishnu--the slayer of Madhu--he, indeed who is known on earth as Kapila, and whose glance alone, O exalted one, destroyed the illustrious sons of Sagara, when they approached him with loud sounds in the bowels of the earth,--that illustrious and invincible Hari is capable, O Brahmana of doing us a great service. Either he or Partha or both may do us that great service, without doubt. Verily as the illustrious Hari had slain the Nagas in the great lake, he, by sight alone, is capable of slaying those Asuras called the Nivatakavachas, along with their followers. But the slayer of Madhu should not be urged when the task is insignificant. A mighty mass of energy that he is. It swelleth to increasing proportions, it may consume the whole universe. This Arjuna also is competent to encounter them all, and the hero having slain them in battle, will go back to the world of men. Go thou at my request to earth. Thou wilt behold the brave Yudhishthira living in the woods of Kamyaka. And for me tell thou the virtuous Yudhishthira of unbaffled prowess in battle, that he should not be anxious on account of Phalguna, for that hero will return to earth a thorough master of weapons, for without sanctified prowess of arms, and without skill in weapons, he would not be able to encounter Bhishma and Drona and others in battle.