大般涅槃經疏 31.7

31.7

「復有人言」下，第二破空是住處，亦先牒、次破、三結。光宅云：既言真諦有重數，亦言虛空有處所。如東西二室，一滿一空，當知有處亦同此破。

From "Again, there are people who say..." onward is the second, refuting [the view that] space is a dwelling place, which also first cites it, next refutes it, and third concludes. Guāngzhái says: Since it is said that the ultimate truth has multiple layers, it is also said that space has a location. Just like two rooms, east and west, one full and one empty, one should know that positing a place is also refuted in this same way.