大乘起信論略述 2.58

2.58

論。無有自性　述曰。此即對明。性離惑染義。此亦文略。若具應言。若心有動。無有自性。心性無動。即是自性清淨心義故。謂諸動念皆無自性。清淨心義也。

[Treatise:] It has no self-nature.
[Exposition:] This reveals through contrast the meaning of the nature being free from the defilement of afflictions. Here too the text is abbreviated; if full, it should say: If the mind has movement, it has no self-nature; because the mind-nature is free from movement, it has the meaning of the mind being pure in its self-nature. This means that all moving thoughts lack self-nature, [which is contrasted with] the meaning of the pure mind.