大方廣佛華嚴經隨疏演義鈔 29.31

29.31

疏「則知密訓等虛空世界為主，攝伴亦然」者，此有兩重：一即釋迦在此為主，攝密訓等為伴；則在密訓為主，攝娑婆等為伴亦然，方是一佛之諦。二如此佛諦名既主伴無盡，則密訓等他佛為主，諦名亦然。

Regarding the commentary's statement, "Then one knows that when a world such as Secret Instructions, equal to empty space, is taken as the primary, its subsumption of companions is likewise": this has two levels: First, Śākyamuni is the primary here, subsuming Secret Instructions and the rest as companions; then, when taking Secret Instructions as the primary, its subsumption of Sahā and the rest as companions is likewise; only then is it the truth of one Buddha. Second, since the names of the truths of this Buddha are thus inexhaustible in primary and companion, then when another Buddha such as Secret Instructions is the primary, the names of the truths are also like this.