俱舍論疏 5.130

5.130

論「有謂有行至恒行不息」，論主因其義便兼破勝論。此敘計也。彼計德句義有二十四種，行是第二十一，故言是德差別。彼計諸法從此至彼，速疾迴轉等皆由行力。箭等乃至未墮落時，其行猶如鳥銜其果，持其箭也。

The treatise says: "Some say there is saṃskāra, up to: moving constantly without cessation." Taking advantage of the topic, the author of the treatise also refutes the Vaiśeṣikas. This recounts their doctrine. They posit twenty-four kinds of quality-categories (guṇa-padārtha), among which saṃskāra (velocity/impetus) is the twenty-first; hence it is said to be a distinction among qualities. They posit that the movement of dharmas from here to there, rapid rotation, and so forth, are all due to the power of saṃskāra. Until an arrow or the like falls to the ground, its saṃskāra is like a bird holding fruit in its beak, sustaining the arrow.