大乘起信論義記 3.375

3.375

In explaining the marks: the true mind refers to the fundamental non-discriminative cognition. The mind of skillful means refers to subsequently attained cognition. The karmic consciousness is the ālayavijñāna upon which the two cognitions rely; in principle, it actually also has the evolving and manifesting [aspects], but here it merely cites the fundamental subtle mark in brief. This is not a virtue of arousing the mind, but merely reveals that when the two cognitions arise in this bodhisattva, there is the burden of subtle arising and ceasing, which differs from the purely immaculate virtues of the Buddha ground; therefore, they are combined as the marks of arousing the mind.