俱舍論記 20.126

20.126

「能為依執故名為取」者，執名為取。四取煩惱能為有情所依止處，執取諸法，故名為取。又解：四取煩惱能為諸有漏法依，執取諸有漏法。又解：四取煩惱能為業依，執取當果。

Regarding "Because they are capable of serving as support and grasping, they are called graspings (upādāna)": grasping is called upādāna. The defilements of the four graspings can serve as that upon which sentient beings rely, grasping onto phenomena; therefore they are called graspings. Another explanation: the defilements of the four graspings can serve as the support for all sāsrava dharmas, grasping onto all sāsrava dharmas. Another explanation: the defilements of the four graspings can serve as the support for karma, grasping future fruition.