the morning, after eating, the Buddha went to the Pava Stupa
to meditate. He sat on a rock in the shade of a tree and investigated
with his mind when he would be due to pass away. He concluded
that he would enter the final nirvana after three months.
When he told this to Ananda, Ananda begged him: "Please
stay and continue helping people to end suffering!" The
Buddha replied: "Ananda, the life of the Buddha is drawing
to its close. He will attain final nirvana three months from
now. Death is unavoidable."