大般涅槃經義記 9.221

9.221

下出體中，先法、後喻。法中，「一切無明等結悉是佛性」辨出向前三世因體。「何以」下釋。此雖煩惱，佛性因故，名為佛性。此初地上佛性家因，名佛性因。「從無明等得善五陰，是名佛性」辨出向前三世果體。「從善五陰獲得菩提」辨出向前非三世果。

In presenting the entity below, there is first the dharma and then the simile. In the dharma, "All ignorance and other fetters are entirely the buddha-nature" distinguishes and presents the aforementioned entity of the cause in the three periods of time. From "Why?" downward is the explanation. Although these are afflictions, because they are the cause of the buddha-nature, they are called the buddha-nature. This is the cause belonging to the buddha-nature on the first ground and above, and is called the cause of the buddha-nature. "From ignorance and the like, one attains the wholesome five aggregates; this is called the buddha-nature" distinguishes and presents the aforementioned entity of the fruit in the three periods of time. "From the wholesome five aggregates, one obtains bodhi" distinguishes and presents the aforementioned fruit that is not of the three periods of time.