3.
The Discourse on Suffering Suitable for Nibbāna
148.
"I will teach you, monks, the practice suitable for Nibbāna.
Listen to that, etc.
And what, monks, is that practice suitable for Nibbāna?
Here, monks, one sees the eye as suffering, sees visible forms as suffering, sees eye-consciousness as suffering, sees eye-contact as suffering, whatever feeling arises with eye-contact as condition - whether pleasant or unpleasant or neither-unpleasant-nor-pleasant - that too one sees as suffering, etc.
One sees the tongue as suffering, etc.
One sees the mind as suffering, sees mental phenomena as suffering, sees mind-consciousness as suffering, sees mind-contact as suffering, whatever feeling arises with mind-contact as condition - whether pleasant or unpleasant or neither-unpleasant-nor-pleasant - that too one sees as suffering.
This, monks, is that practice suitable for Nibbāna."
The third.