大乘起信論裂網疏 3.16

3.16

Objects are merely the image components of one's own mind and mental factors, hence they are called "unreal"—namely, their nature of other-dependence is like an illusion. Taking these as the objective condition and the dominant condition, the six marks are further generated. Since that which generates is already unreal, how could the marks that are generated be real? However, the preceding three marks apply broadly to the eight consciousnesses and all mental factors, because mind and mental factors invariably each possess the four components. These subsequent six marks, on the other hand, have some that are restricted and some that are broad.