大方廣圓覺修多羅了義經略疏 2.205

2.205

圓覺不守自性，隨緣遍諸差別之性。諸性起時，全覺性起，故法身不增不減。經云：「法身流轉五道，名曰眾生。」

Perfect enlightenment does not cling to its own nature, but accords with conditions to pervade all differentiated natures. When all natures arise, it is entirely the arising of the enlightened nature; therefore the dharmakāya neither increases nor decreases. A sūtra says: 'The dharmakāya transmigrating through the five destinies is called a sentient being.'