大方廣佛華嚴經疏 6.41

6.41

第四門，謂以佛力不動，成住壞三皆如空劫常清淨也。此於遷變得解脫也。

In the fourth approach, it means that through the unmoving Buddha-power, the three [phases] of formation, abiding, and destruction are, like the kalpa of emptiness, constantly pure. This attains liberation from transformation and change.