大方廣佛華嚴經隨疏演義鈔 10.15

10.15

疏「由上二義」下，二會前義。於中二：先會一性、後會一乘。前中三：初明一性五性、二明成佛不成佛、三明無性即佛性。初中，先正明、後引證。前中謂事有分限，理無分限。五性約事，一性約理。今理遍事，則一性之理全在五性之中；事遍於理，五性即是一性。故云「互該徹故皆同一性」。

From the Commentary's "Due to the above two meanings" onward is the second, harmonizing with the preceding meanings. Within it, there are two [parts]: first, harmonizing the one nature; next, harmonizing the one vehicle. In the former, there are three: first, clarifying the one nature and five natures; second, clarifying attaining Buddhahood and not attaining Buddhahood; third, clarifying that naturelessness is identical to Buddha-nature. In the first, it first clarifies directly and later cites evidence. In the former, it means that phenomena have limits, while principle has no limits. The five natures are discussed in terms of phenomena; the one nature is discussed in terms of principle. Now, principle pervades phenomena, so the principle of the one nature is entirely within the five natures; phenomena pervade principle, so the five natures are identical to the one nature. Hence it says, "Because they mutually penetrate and pervade, they are all identical to the one nature."