大乘起信論廣釋卷第三．四．五 4.117

4.117

論。云何為五至猶如虛空　釋曰。次下別釋。別釋五種　即分為五。一一文中皆有三義。初明起執之由。次正明執相。後顯其對治。此初也。畢竟寂寞即新論言究竟寂滅無相之義。此文為破執相好身為真佛者。故說法身其體無相猶若虛空。即般若等諸經所說。若以色觀我故彼不能了等。

[Treatise:] What are the five? [... just like empty space].
[Commentary:] Next, specifically explaining them. The specific explanation of the five kinds is divided into five parts. In each and every text, there are three points: first, explaining the cause of the arising of the attachment; second, directly explaining the characteristic of the attachment; third, revealing its counteraction. This is the first. 'Ultimately quiescent' has the meaning of 'ultimate cessation and signlessness' in the new translation. This text is meant to refute those who grasp the physical marks of the body as the true Buddha; therefore it states that the substance of the dharmakāya is signless, just like empty space. This is what is spoken in the *Prajñāpāramitā* and other sūtras: "If one sees me by means of form..." because they cannot understand, and so forth.