大般涅槃經集解 55.4

55.4

案僧亮曰：問意謂佛性雄猛，譬金剛力士；自身有之，何故不見耶？以證無也。僧宗曰：舉第四問，以請答也。

Sengliang comments: The meaning of the question is that the buddhadhātu is heroic and fierce, like a vajra-wielding athlete; since one possesses it in one's own body, why does one not see it? This is used to prove its non-existence. / Sengzong says: He raises the fourth question to request an answer.