Guess this basically covered by
What is Nirvana? thread.
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The Fire Sermon (Ādittapariyāya Sutta)
The Buddha approached Gaya on his palanquin, followed by 952 adherent beggars (Bhikkus) with their begging bowls in hand.
On top of a hill, after eating a very sweet mango, he gave a sermon to any and all who happened to be a part of his audience
"All things, ladies and gentelmen, are on fire. "
"Whatever sensations received by the senses, the forms and receivers of perception, whether pleasant, unpleasant or indifferent are on fire."
"With what are these things on fire you might ask?"
"With the fire of passion, say I, with the fire of hatred, with the fire of infatuation; with birth, old age, death, sorrow, lamentation, misery, grief, and despair are they on fire."
"And we are against the inflammation of all hindrances which fuel the conflagration of suffering and unsatisfactoriness. "
"My brothers and sisters, we are strangely inflamed and activated to therapeutically cool inflammation, to quench the raging fires of Dukkha."
"You must excuse any contradictions."
"Is my sermon, my friends, on fire? Or does it cool one to unconditioned stillness?"
"When the world cannot burn, dissipated by this stillness, by the absence of passion, there is no fuel for causation and rebirth is ended. Thereafter there is nothing more to do."
The Buddha raised his hands in prayer.
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A series of aerial fireworks suddenly shot out of the crowd. The Buddha wasn't embarrassed by such action. A few of the monks clapped with excitement. A few sighed with exasperation.