4.
Commentary on the Chapter on Teachings
88. In the first discourse of the fourth, "liberation of mind" means fruition concentration. "Liberation by wisdom" means fruition wisdom.
89. In the second, "exertion" means energy. "Non-distraction" means unified focus of mind.
90. In the third, "mentality" means the four immaterial aggregates. "Matter" means the aggregate of matter. Thus in this discourse, what is called the knowledge of the delimitation of the portions of phenomena has been spoken of.
91. In the fourth, "true knowledge" means fruition knowledge. "Liberation" means the remaining mental states associated with it.
92. In the fifth, "view of existence" means the eternalist view. "View of non-existence" means the annihilationist view. The sixth and seventh are of manifest meaning only.
95. In the eighth, "being difficult to admonish" means the state of being difficult to admonish. "Evil friendship" means the state of associating with evil friends. The ninth should be understood by the reverse of what has been stated.
97. In the tenth, "skilfulness in the elements" means knowing the eighteen elements as "elements." "Skilfulness in attention" means knowing by applying the triad of characteristics by way of impermanence and so on to those very same elements.
98. In the eleventh, "skilfulness in what is an offence" means knowing the five and seven classes of offences. "Skilfulness in emerging from an offence" means knowing emergence from offences either by way of confession or by way of the wording of the legal act.
The Chapter on Phenomena is the fourth.