首楞嚴義疏注經 10.351

10.351

答前為頓，消除為次第盡也。生起則從細至麁、從內感外，一切諸法唯識變故，故云生因識有。除斷則先麁後細、從外向內，如浣衣、磨鏡麁垢先落。然生起時實非前後，一念頓變，以約麁細作此說耳；圓頓觀法斷亦非次，功行成時自然爾也。

This answers that their arising is sudden, whereas their elimination proceeds gradually to completion. As for arising, it proceeds from subtle to coarse, and from the internal it induces the external; because all dharmas are transformed solely by consciousness, it says, "their arising is due to consciousness." As for elimination and severance, it is first coarse then subtle, from outside toward inside, just as in washing clothes or polishing a mirror the coarse dirt falls away first. However, when arising, they are in truth not sequential, but suddenly transform in a single thought-moment; it is only in terms of coarseness and subtlety that this is stated. In the practice of perfect and sudden contemplation, severance is likewise not sequential; when the efficacy of cultivation is accomplished, it is naturally so.