The Ādittapariyāya Sutta is found in volume four of the Saṃyuttanikāya. According to the account in the Saṃyuttanikāya, the Buddha taught the Ādittapariyāya Sutta at Gayāsīsa to one thousand fire-worshipping ascetics.
This discourse is quite short and straightforward. The six sense bases are on fire with passion, ill-will, and delusion. These mental defilements lead to suffering. If one understands them clearly, one becomes disenchanted towards all objects of the six senses, which leads to liberation and nibbāna.
“ The all, monks, is burning. What, monks, is the all that is burning? The eye is burning, sights are burning, eye-consciousness is burning, eye-contact is burning, and the pleasant, painful, or neutral feelings that arise dependent on eye-contact, those too are burning. With what are they burning? They are burning with the fire of passion, the fire of ill-will, and the fire of delusion; I declare that they are burning with the fire of birth, aging, death, grief, lamentation, pain, sorrow, and despair ”.
“ The ear is burning … the mind is burning, mental-objects are burning … I declare that they are burning with the fires of birth, aging, death, grief, lamentation, pain, sorrow, and despair ”.
“ Seeing thus, monks, the learned noble disciple is disenchanted with the eye, with sights, eye-consciousness, eye-contact, pleasant, unpleasant, or neutral feelings that arise dependent on eye-contact. He is disenchanted with sounds … disenchanted with odours, disenchanted with tastes, disenchanted with touches, disenchanted with mental objects. Being disenchanted, he is dispassionate, being dispassionate he is liberated, and the knowledge arises that he is liberated. Birth is destroyed, the holy life has been lived, what should be done has been done, and he knows that there will be no more of this (birth, aging, etc.) ”.