俱舍論疏 20.192

20.192

論「能為依執故名為取」，總釋取名也。能與執取三有自體為依故。《正理論》云「執取彼彼自體名取」，已上有部釋也。

The Śāstra says: "Because they can act as a basis for clinging, they are called graspings (upādāna)"—this generally explains the name grasping. Because they can provide a basis for grasping the intrinsic nature of the three realms of existence. The Nyāyānusāra states: "Grasping each respective intrinsic nature is called grasping." The above is the Vaibhāṣika explanation.