大乘起信論廣釋卷第三．四．五 5.35

5.35

論。或示超地至不可思議　釋曰。此隨根延促德。謂聞劫長心則退沒故。示超地言有速成。或說我於等者。此明延德。謂聞劫少則不精勤故。說長時發其勇猛。能示如是等者。此結眾德。事妙無窮。心言路絕皆為饒益諸眾生也。

[Treatise:] Or they manifest transcending grounds […] inconceivable.
[Commentary:] This is the virtue of extending or shortening [time] in accordance with faculties. Hearing that kalpas are long, minds would backslide; therefore, they manifest transcending the grounds, stating that there is swift attainment. "Or they say, 'I, in […]'": this clarifies the virtue of extension. Hearing that kalpas are few, they would not be diligent; therefore, they speak of a long duration to arouse their vigour. "Able to manifest such […]": this concludes the multitude of virtues. Their wondrous activities are inexhaustible, beyond the path of mind and speech, and all are for the sake of benefiting sentient beings.