“There are these three states of existence. What three? Existence in the sensual realm, the realm of luminous form, and the formless realm. These are the three states of existence. The noble eightfold path should be developed for the direct knowledge, complete understanding, finishing, and giving up of these three states of existence.”

Linked Discourses 45.165 13. Searches Forms of Suffering

“Mendicants, there are these three forms of suffering. What three? The suffering inherent in painful feeling; the suffering inherent in conditions; and the suffering inherent in perishing. These are the three forms of suffering. The noble eightfold path should be developed for the direct knowledge, complete understanding, finishing, and giving up of these three forms of suffering.”

Linked Discourses 45.166 13. Searches Kinds of Barrenness

“Mendicants, there are these three kinds of barrenness. What three? Greed, hate, and delusion. These are the three kinds of barrenness. The noble eightfold path should be developed for the direct knowledge, complete understanding, finishing, and giving up of these three kinds of barrenness.”

Linked Discourses 45.167 13. Searches Stains