維摩經略疏垂裕記 4.41

4.41

二、「良以」下，結示妙用。「同棲空室」者，空室表寂光也。荊溪云：正示同居，現疾得名，名方便品。

Second, from "truly because" onward, concluding by showing the wondrous function. Regarding "dwelling together in the empty room": the empty room symbolizes the [Pure Land of] Eternally Quiescent Light. Jingxi says: "This precisely shows the co-dwelling realm, manifesting illness to gain the name; hence it is named the Expedient Means Chapter."