俱舍論頌疏論本 28.67

28.67

As for 'respectively, they are concordant with afflictions, their own stage, the higher stage, and the undefiled,' this explains the characteristics of the four divisions. That which is concordant with afflictions is called the division concordant with falling away; that which is concordant with its own stage is called the division concordant with maintenance; that which is concordant with the higher stage is called the division concordant with special progression; that which is concordant with the undefiled is called the division concordant with penetration. Hence, only the division concordant with penetration can give rise to the undefiled.