After weapon Brahmastra was thrown into the womb of Uttara by Ashwatthama of sinful deeds, Lord Krishna, with a cheerful heart, said this to Ashwatthama - A certain Brahman of pious vows, beholding Virata’s daughter Uttara who is now daughter-in-law to Arjuna, while she was at Upaplavya, said, “While the Kuru line will become extinct, a son will be born to you. The words of that pious man shall become true today, the Pandavas shall definitely have a son. While Shri Krishna was saying these words Ashwatthama, filled with wrath, replied, saying, , O Keshava, what you say from your partiality for the Pandavas, shall not happen. Uplifted by me, this weapon of mine shall fall on the foetus that is in the womb of Uttara, that foetus which you desire to protect.
Lord Krishna said, O Ashwatthama, the fall of this mighty weapon will not be fruitless. The foetus will die. But being dead, it will live again and will have a long life. All wise men know you for a coward and a sinful wretched act, Always engaged in sinful acts, you art the slayer of children. For this reason, you must have to bear the fruit of these your sins. Lord Krishna ask Bhimsena to remove the gem from the forehead of Ashwatthama. Bhimsen forcefully remove the divine gem from the forehead of Ashwatthama leaving him bleeding. Shri Krishna further says for three thousand year you will wander over this earth, without a companion and without being able to talk with any one. Alone and without anybody by your side. You will wander through diverse countries, O wretch, you will have no place in the midst of men. will roam in the forests with blood and puss oozing out of his injuries and cry for death but even death would not have mercy on you. The wound caused by the removal of this gem on your forehead will not heal and your body will suffer from a host of incurable diseases forming sores and ulcers that would never heal for 3000 years. You will wander over the Earth, O sinful soul, with the weight of all diseases on you.
O wicked soul Ashwatthama! Though burnt by the energy of your weapon’s fire, I shall revive him and that boy will become the mighty-armed king of the Kurus, before your very eyes. O lowest of men, behold the energy of my austerities and my truth.
Vyasa said, ‘Since, disregarding us, you have perpetrated this exceedingly cruel act, and since your behavior is such ruthless although you are a good Brahmana by birth, therefore, those excellent words that Shri Krishna has said, will, without doubt, be realized in your case, an adopter as you have been of Kshatriya usages.
Ashwatthama said, ‘O holy one, I shall live! Let the words of this illustrious and foremost of men become true. Drona’s son, then, having made over his gem to the high-souled Pandavas, cheerlessly proceeded, before their eyes, to the forest.
Pandavas after taking the gem that was born with Ashwatthama, quickly came back to the intelligent Draupadi who was sitting in observance of the Praya vow Approaching the cheerless princess stricken with sorrow and grief, the Pandavas with Keshava, sat round her. Then the mighty Bhimasena, gave that celestial gem unto her and said “The slayer of thy sons hath been vanquished. Rise - up, casting off your sorrow, and recollect the duties of a Kshatriya lady” Having vanquished Drona’s son, we have set him free for the sake of his being a Brahmana and of the respect that should be shown to our deceased preceptor Dronacharya.
“Draupadi said, ‘I desired to only pay off our debt for the injury we have sustained. The preceptor’s son is worthy of my reverence as the preceptor himself. Let the king Yudhishthira bind this gem on his head. The king then, taking that gem, placed it on his head, at the desire of Draupadi and regarding it as a gift from the preceptor Dronacharya. Holding on his head that excellent and celestial gem, the puissant king looked beautiful like a mountain with the moon above it. Though stricken with grief on account of the death of her sons Draupadi, possessed of great mental strength, gave up her vow.