
Parva 8
Karna Parva
Two days as commander, and a charioteer who would not stop talking
Karna made commander
After Drona, Karna became commander. He set a condition. He said Arjuna had Krishna on his chariot, and he needed a charioteer of the same rank. He named Shalya, king of Madra and uncle to Nakula and Sahadeva.
Shalya had actually been coming to fight for the Pandavas. Along the way he was received with great honor, camps, feasts, everything. Believing the Pandavas had arranged it, he happily said, ask of me whatever you wish. It was Duryodhana who stepped forward, he had arranged it all. He asked only that Shalya fight on his side. Shalya had already given his word. But from there he went straight to the Pandavas and told them everything. Yudhishthira asked him for one thing, that if he ever drove Karna's chariot, he should keep breaking Karna's spirit. Shalya agreed.
Shalya found it an insult, a king driving another man's chariot. Duryodhana talked him into it, and Shalya agreed, but on one condition, that he would say whatever he wished, and Karna would not stop him. Karna accepted. Shalya mounted the chariot, on Karna's side, but not for Karna.
The charioteer's condition
The chariot moved, and Shalya began to speak. He kept saying that Arjuna was greater, that Karna was nothing before him, that the outcome was already decided. Once Karna said he would kill Arjuna. Shalya laughed and said he had said that many times before, and every time Arjuna had come back alive. Karna did not stop him, he could not, that had been the condition. The very man driving his chariot kept breaking him down, and kept the promise made to Yudhishthira. The chariot rolled on. This is the real battle of this parva, and it was fought inside the chariot.
The killing of Duhshasana
That same day Bhima found Duhshasana. He did exactly what he had sworn before the full court, he tore open his chest. The vow made in that hall was fulfilled word for word.
Four brothers spared
That day Karna fought Yudhishthira and wounded him badly. But he did not kill him, he let him go. Then Nakula, then Sahadeva, then Bhima, each time the same, Karna won, and let them live. He was keeping his promise to Kunti to the letter. Yudhishthira, wounded, returned to camp. Arjuna came to see him. Yudhishthira, still angry, told Arjuna that his Gandiva was useless, better to give it to someone else. Arjuna drew his sword, for he had sworn that he would kill anyone who told him to give up the Gandiva, and the one who had said it was his own elder brother. Krishna stepped in and found a way through, saying that insulting an elder was as good as killing him. Arjuna said bitter things to Yudhishthira instead, and the vow remained unbroken. Yudhishthira then said himself that the fault had been his.
The chariot wheel
Karna and Arjuna finally faced each other. Both armies stopped fighting to watch. The fight was evenly matched. Karna knocked down Arjuna's crown, Arjuna forced Karna's chariot back. Karna fired the Nagastra, in which rode a serpent named Ashvasena, whose mother had died in the burning of the Khandava forest and who wanted revenge on Arjuna. The arrow flew straight at Arjuna's head. Krishna pressed the chariot down into the earth with his foot, the chariot sank, and the arrow only carried away the crown. Ashvasena came back and told Karna to fire it again, this time it would not miss. Karna refused, saying he never fired the same arrow twice.
Before the two closed again, Arjuna killed Karna's son Vrishasena in front of his father's eyes, an answer to Abhimanyu, cut down the same way.
Then the wheel of Karna's chariot sank into the ground. He climbed down and began pulling it free, and called out to Arjuna to stop, since the rule was that an unarmed man was not to be struck. Krishna answered. One by one he listed the moments when Karna himself had broken that same rule, the dice hall, the disrobing, the encircling of Abhimanyu in the Chakravyuha. Karna fell silent.
The wheel had not sunk on its own. Years earlier Karna had unknowingly killed a Brahmin's cow, and the Brahmin had cursed him, that on the day of his greatest battle, the earth would swallow his chariot wheel. That day had come. He then tried to recall the weapon he had learned from Parashurama, and it would not come to him. Karna had studied under Parashurama disguised as a Brahmin, and when the truth came out, Parashurama had cursed him, that at the moment of greatest need, the knowledge would fail him. That moment had also come.
Arjuna fired his arrow. Karna fell.
Note: Karna made commander, asking for Shalya as charioteer and his condition, the killing of Duhshasana, Karna sparing the four brothers, the Gandiva episode between Yudhishthira and Arjuna, the sinking of the wheel, Krishna's answer and both curses are all in the Karna Parva of Vyasa's Mahabharata. The full story of both curses comes in the Shanti Parva — the cow curse lands on the wheel and the Parashurama curse on the knowledge, and both are fulfilled in the same moment. Karna sparing the four brothers is the keeping of the same promise he made to Kunti in the Udyoga Parva. Several famous stories of Karna's generosity — such as breaking off a gold tooth to give away as he died — come from later tradition and folklore, not the main text.
Source: Mahabharata (ascribed by tradition to Vyasa), Karna Parva