Parashurama taught Bhishma archery. He also taught Drona, and later Karna, which makes him the single common teacher behind most of the firepower on both sides at Kurukshetra. Bhishma was his student first, and by every account his best.
Which is why the twenty-three day duel between them — teacher against student, on the field at Kurukshetra generations before the famous war — is one of the strangest passages in the Mahabharata. Neither man wanted it. Neither man could stop it. And the reason it happened was a woman neither of them had wronged directly.
How It Started
Bhishma had abducted three princesses of Kashi — Amba, Ambika and Ambalika — from their swayamvara, carrying them off to Hastinapura as brides for his half-brother Vichitravirya. It was an accepted form of marriage for a kshatriya, and Bhishma fought off every king present to do it.
Amba, the eldest, told him afterwards that she had already chosen Shalva of Saubha and considered herself his. Bhishma, who had a rigid sense of correctness, immediately sent her to Shalva with an escort. Shalva refused her — she had been won by another man in open combat, and taking her back would be accepting Bhishma’s leavings.
So Amba came back to Hastinapura. She asked Bhishma to marry her himself, since he was the one who had ruined her prospects. He could not: he had sworn lifelong celibacy years earlier, the vow that gave him his name. She asked Vichitravirya. He refused a woman who had declared herself another man’s.
Amba was now a woman with no place in any household in India, and she had worked out precisely whose fault that was. She went to Parashurama.
The Teacher Takes the Case
Parashurama had spent a large part of his life killing kshatriyas, and he had a long-standing sympathy for people wronged by them. He heard Amba out and summoned Bhishma, expecting to settle it in a sentence: marry her.
Bhishma refused his own guru. He explained the vow. He offered Parashurama every form of respect a student owes a teacher and then said no, and kept saying no. Parashurama warned him that refusing a guru’s instruction is itself a sin. Bhishma agreed that it was, and still refused.
Parashurama told him to prepare for battle. Bhishma pointed out, not unreasonably, that a brahmin who had put down his weapons could not simply pick them up to settle a domestic dispute. Parashurama picked them up.
Twenty-Three Days
They fought on the field at Kurukshetra, and what the text describes is less a duel than a siege. Bhishma had a chariot and Parashurama initially fought on foot until Bhishma refused to attack a man without one; Ganga, Bhishma’s mother, and the earth itself are described as supplying Parashurama with a chariot and horses so the fight could proceed on equal terms. They exchanged celestial weapons for days. Each man knew every technique the other had, because one of them had taught it.
Neither could gain an advantage. The gods, watching, became alarmed — the weapons being traded were the sort that damage the world rather than the combatant.
On the twenty-third day Bhishma was preparing to use the Praswapastra, a weapon that would have put Parashurama to sleep and ended the fight with his teacher humiliated rather than dead. The sages intervened and stopped him, and Bhishma withdrew the weapon rather than shame the man who had trained him.
Parashurama then did something that costs a teacher a great deal. He told Amba that he could not defeat Bhishma, and that she would have to look elsewhere.
What Amba Did Next
She looked elsewhere. She performed austerities so severe that Shiva himself appeared and told her she would kill Bhishma — not in this life, but in the next. Amba built her own pyre and walked into it, and was reborn as Shikhandi in the house of Drupada, carrying the memory of everything.
Bhishma, who had refused to fight a woman, would not raise a weapon against Shikhandi. Arjuna shot from behind Shikhandi’s chariot. That is how the invincible man ended up on a bed of arrows.
What Makes This Story Timeless
The duel is remembered for its spectacle, but its real subject is the collision of two absolutely correct positions. Bhishma is right: a vow taken before witnesses and gods cannot be broken because a superior asks. Parashurama is right: a teacher who sees his student ruin an innocent person’s life and does nothing has failed at the job. Neither is lying, neither is being stubborn out of pride, and there is no resolution available. They fight for twenty-three days because there is genuinely nothing else to do.
The Mahabharata does this repeatedly, and it is the reason the epic has outlived tidier stories. It does not usually offer a right side. It offers two people applying good principles faithfully and shows you the wreckage. And it notes, quietly, that the person who actually solved the problem was Amba — who stopped asking powerful men for help and spent a lifetime and a death arranging the answer herself.
Retold from the Mahabharata, Udyoga Parva (Amba Upakhyana)