大乘起信論義疏 1.103

1.103

Fourth, from here down, distinguishes [delusions] with respect to the two obstructions. The six layers explained previously are subsumed into the two obstructions: fundamental ignorance is taken as the obstruction to wisdom, and [the levels] from the karma-consciousness downward are the obstruction of afflictions. However, these two obstructions should now be discussed extensively.