大般涅槃經集解 63.69

63.69

案僧亮曰：乘上正因不斷之辭以為問也。正因之力必感佛果，果善因善二俱不斷，故知非闡提也。智秀曰：第四翻，承上不斷性之旨，仍以為難也。佛性是善，闡提不能斷，云何成闡提也。

Sengliang comments: He takes the preceding statement that the direct cause is unsevered to formulate the question. The power of the direct cause will definitely induce the Buddha-fruit; since both fruit-good and cause-good are unsevered, one knows he is not an icchantika. Zhixiu comments: The fourth round: taking up the import of not severing the nature to press an objection. Buddhadhātu is good; if the icchantika cannot sever it, how does he become an icchantika?