Sattesu majjhattākārappavattilakkhaṇā upekkhā,
Ñ(IX,96): Equanimity is characterized as promoting the aspect of neutrality towards beings.
Ñ: Its function is to see equality in beings.
Ñ: It is manifested as the quieting of resentment and approval.
Ñ: Its proximate cause is seeing ownership of deeds (kamma) thus: 'Beings are owners of their deeds. Whose [if not theirs] is the choice by which they will become happy, or will get free from suffering, or will not fall away from the success they have reached?'.
Paṭighānunayavūpasamo tassā sampatti, gehasitāya aññāṇupekkhāya sambhavo vipatti.
Ñ: It succeeds when it makes resentment and approval subside, and it fails when it produces the equanimity of unknowing, which is that [worldly-minded indifference of ignorance] based on the house life.