大乘起信論略述 2.42

2.42

論。此義云何　述曰。此徵問所以也。此有二意。染淨之熏俱無始有。何故染熏有盡淨熏無斷耶。染淨相因方成熏義。若得佛已則無染法。如何可言淨法熏習則無斷耶。

[Treatise:] What does this mean?
[Exposition:] This inquires into the reason. There are two senses here: The perfuming of defilement and purity both exist without beginning; why is it that defiled perfuming has a termination, while pure perfuming is without interruption? Only when defilement and purity are mutually conditioned does the meaning of perfuming hold; if one has already attained buddhahood, there are no defiled dharmas, so how can it be said that the perfuming of pure dharmas is without interruption?