大般涅槃經義記 7.274

7.274

下文釋中，此之二門通名有餘。有餘有三：一煩惱餘猶此緣也、二是餘業猶此業也、三是餘苦猶此有餘。「修淨身」者攝淨身行，精修十善故能淨身。後攝智中，「了知諸緣」明攝對治。下二離障，「離諸怨敵」除障道過。斷業煩惱及破八魔名離怨敵。斷除二過，離生死過，亡因絕果，名「除二邊」。

In the explanation of the text below, these two doors are collectively named "residual". Of residual, there are three kinds: first, residual afflictions, which are these conditions; second, residual karma, which is this karma; third, residual suffering, which is this residual. "Cultivating the pure body" subsumes the practice of a pure body: zealously cultivating the ten wholesome actions, one is therefore able to purify the body. In subsuming wisdom thereafter, "fully knowing the various conditions" explains subsuming the antidotes. The two below are leaving hindrances: "leaving all enemies" eliminates the faults that hinder the path; severing karma and afflictions and crushing the eight Māras is called leaving enemies. Severing the two faults, leaving the faults of saṃsāra, obliterating causes and cutting off effects is called "eliminating the two extremes".