大般涅槃經義記 6.333

6.333

「何以」下釋，以「色非色性無合故」，不可色心合以為父。就破殺中，偏就色破，以色質礙可殘害故。「凡夫於色妄生父想」舉其所計，「如是色陰亦不可害」對之總破，叵害同心是以言「亦」。「何以」下釋，於中先問「何故色陰亦不可害」，下對釋之。

From "why is that?" onward, it explains: because "the natures of form and non-form have no combination," form and mind cannot unite to be the father. In dismantling killing, it specifically dismantles it with respect to form, because form has physical resistance and can be injured. "Ordinary persons falsely generate the idea of a father with respect to form" cites what is conceived; "such an aggregate of form is also unharmable" matches it with a general refutation; because it is impossible to harm just as with mind, it says "also." From "why is that?" onward, it explains; therein, it first asks, "Why is the aggregate of form also unharmable?" and below explains it in response.