八識規矩補註 2.42

2.42

This consciousness has briefly three stages from the defiled cause to the undefiled fruit: first, the stage of the storehouse grasped through self-attachment; second, the stage of the fruit of wholesome and unwholesome karma; third, the stage of continuous holding. First, from beginningless time up to the Immovable Ground, it is called the ālaya, translated here as "storehouse." Next, also from beginningless time up to the path of liberation, it is called the vipāka, translated here as "maturation," because it possesses maturing through change, maturing at a different time, and maturing as a different category; hence it is called "maturation." Finally, at the stage of the Buddha-fruit to the end of the future, it is called the immaculate consciousness. In the first stage, it is "ālaya" because sentient beings grasp it as their internal self; it is "maturation" because it is the fruit drawn forth by good and evil, and because it holds undefiled seeds and manifest activity without interruption. When this root consciousness first reaches this Ground, it discards the name "storehouse consciousness" because the fault is grave, and because sentient beings no longer grasp it as their internal self.