成唯識論演祕 2.164

2.164

Answer: First, the fundamental atom is transformed by the eighth consciousness and is not outside consciousness; unlike other schools, it is therefore called designated. However, because it possesses material obstruction, it is said to be real; being an aspect of maturation (vipāka), the fundamental atom does not perfume to form seeds. The reflected image atom does not have the obstructive function like the fundamental material basis, and is therefore said to be designated; functioning as an objective condition to produce visual consciousness, it is said to be substantially real; the reflected image atom perfumes to form seeds. Were it not so, subsequent consciousness would lack an image.