大方廣佛華嚴經隨疏演義鈔 64.28

64.28

疏「三約空有」者，亦是生起之生。不同前行，隨一行中有空有故，入觀起空、出觀起有故，間起名生。七地常在觀，而涉有不迷於空、觀空不礙於有，故稱方便。更無出入之殊，故云無生。

On the commentary passage "Third, in terms of emptiness and existence": this is also the "arising" of being generated. It is not like the previous practices: depending on any single practice, emptiness and existence are present, so entering contemplation generates emptiness, and emerging from contemplation generates existence; therefore, arising intermittently is called arising. On the seventh bhūmi, one is constantly in contemplation, yet engaging in existence does not delude one regarding emptiness, and contemplating emptiness does not obstruct existence; hence it is called upāya. There is no longer any distinction of entering and emerging; hence it is called "non-arising".