8.
The Discourse on the Aggregates of Clinging
179.
"These are the five aggregates of clinging, monks.
Which five?
That is:
the aggregate of clinging to matter, the aggregate of clinging to feeling, the aggregate of clinging to perception, the aggregate of clinging to activities, the aggregate of clinging to consciousness.
These, monks, are the five aggregates of clinging.
For the direct knowledge, full understanding, utter elimination, and abandoning of these five aggregates of clinging, monks, etc.
this noble eightfold path is to be developed."
The eighth.