大方廣佛華嚴經隨疏演義鈔 37.34

37.34

The commentary's phrase “because conditioned formations are impermanent and swiftly arise and perish” explains and establishes the meaning that exhaustion is the conditioned. Thus the Nirvāṇa Sūtra says: “Conditioned formations are impermanent; they are dharmas of arising and perishing. Because they swiftly arise and perish, they do not abide for a single kṣaṇa.”