法界次第初門 3.47

3.47

七、有為空。有為空者，有為法名因緣和合生，所謂五眾、十二入、十八界等。今有為法二因緣故空：一者無我、無我所，及常相不變易不可得故空；二者有為法，有為法相空，不生不滅，無所有故，是為有為空也。

Seventh: conditioned emptiness. Conditioned emptiness: conditioned dharmas are called that which is born of the conjunction of causes and conditions, namely the five skandhas, twelve āyatanas, eighteen dhātus, and so forth. Now conditioned dharmas are empty due to two causes and conditions: first, because a self, what belongs to self, and permanent, unchanging characteristics are unapprehendable, they are empty; second, as for conditioned dharmas, the characteristics of conditioned dharmas are empty, being unproduced, unceasing, and non-existent; this is conditioned emptiness.