The death of Vidura is not directly mentioned in the Vyasa
Mahabharata. But Kashidashi Mahabharata gives a satisfying answer to the query
how Vidura died.
A few years after the Kurukshetra war, Dhritarashtra,
Gandhari, Kunti and Vidura had left for the forest. Yudhisthira was unhappy
with this decision of his mother and uncles. But he had to let them go.
Yudhisthira remained sad and one day he along with his
brothers decided to visit Dhritarashtra, Gandhari, Kunti and Vidura.
They reached the Dwaipayana forest and located the ashram of
the elders. Dhritarashtra was happy to see the Pandavas.
Dhritarashtra then told Yudhishtira that Vidura has given up
food and sits meditating under a tree on the banks of a river.
Yudhisthira went in search of Vidura and saw him sitting
calmly and meditating under a banyan tree. Yudhisthira felt profound peace as
he approached Vidura. Everything remained calm and silent. He notice yellows
leaves falling from the tree.
Yudhishtira called out to Vidura but there was no response.
As Yudhisthira approached, Vidura opened his eyes and gazed
at the king. The next moment the soul of Vidura moved out of the body. Vidura
fell dead.
Yudhisthira felt as if some being had entered his body. He
felt as if his intelligent got sharper.
This was the end of the wise Vidura in the Mahabharata.