大乘起信論裂網疏 2.84

2.84

Second, the great meaning of genuine non-emptiness, like space and a bright mirror. That is to say, all phenomena are completely fulfilled with an indestructible nature; all marks of worldly objects appear within it, neither going out nor coming in, neither ceasing nor being destroyed, permanently abiding in the one mind, unable to be defiled by any defiled phenomena, the substance of knowing being fully endowed with boundless untainted merits, because it acts as the cause perfuming the minds of all sentient beings.