大般涅槃經集解 54.177

54.177

案道生曰：佛性是種生義，故是因非果也。僧亮曰：正因性於四法最是。僧宗曰：此下第六，因果門也，謂十二因緣境界性也。

Daosheng comments: Buddhadhātu has the meaning of being a seed that produces; therefore it is a cause and not an effect. Sengliang comments: The nature of the direct cause is the foremost among the four dharmas. Sengzong comments: From here down is the sixth, the gate of cause and effect, which refers to the objective nature of the twelve links of dependent origination.