The concluding portions of Srimad Bhagavatham chronicles Sri Krishna’s plans to wind-up his sojourn on Earth to re-establish Dharma.
Anxious to wind-up his clan and return to where He belonged, He sets up his own son Samba (with his meddling friends) to ridicule a group of Rishis on the move. Samba is made-up as a pregnant woman in advanced stage, paraded before the Rishis, asked to foretell the sex of the baby. They predicted immediate delivery of a steel crow-bar ! They stripped Samba, had a hearty laugh, the Rishis went their way.
Soon, Samba felt acute pain in the abdomen and delivered the crow-bar. Terrified, they took it to the King Ugrasena (Kamsa’s father) and reported details. The King held council, ordered to file the bar to powder and spray it into the deep-sea, the short end-piece also thrown into it.
The powder got washed on to the shore, helped to grow blades of grass with razor-sharp edges. The end-piece was swallowed by a fish, it was caught by a fisherman. His wife discovered it while cutting it, gave it to the husband, who passed it on to a hunter -friend, Jara. He used it as a head-piece on his arrow.
On a hunting expedition, by a misjudgment, he shot at Sri Krishna who was lying on his back on the beach. Realising the mistake, he rushed to regret the error and help Krishna. My Lord blessed him for the favour, sent him direct to Heaven, before He gave up the ghost.
Separately, the Yadhavas had an intercinine fight among themselves, after a drinking brawl. They used the sharp-edged grass as weapon, killed each other.
This scene is getting re-enacted in the Congress, decide for yourself who’s who.