大乘起信論廣釋卷第三．四．五 4.47

4.47

論。如木中火性至無有是處　釋曰此喻也。法中但明具足之位。今舉喻中唯顯闕真。合中方明具闕德失。此法喻中相影略也。

[Treatise:] "Just as the nature of fire within wood [...] there is no such possibility." [Commentary:] This is the analogy. The teaching only clarified the stage where both are complete; now, presenting the analogy, it only reveals the lack of the real [condition]. In the application, it will properly clarify the merits and faults of completeness and deficiency. Here the teaching and analogy complement and imply each other.