大般涅槃經義記 8.273

8.273

自下第三雙就法喻破其本有。有二問答：初師子門。「若了因無，云何得名有乳有酪」以理直請。下佛答之。先立三答，次辯其相。舉後答前名為「轉答」，默止令解說為「默答」，異法相並令疑捨取名為「疑答」。指文可知。下就三中初門對門。「我今轉答」總以標示。「如世人言有乳有酪以定得故得名有」者，就喻轉答。牛食水草定得乳故，說言有乳。有乳之者定得酪故，名為有酪。「佛性亦爾，有生有性，以當見故」就法轉答。

From here below is the third part, refuting its fundamental presence with respect to both the doctrine and the analogy together. There are two questions and answers: first is Siṃhanāda's section. "If the clarifying cause is absent, how can it be called having milk and having curds?" directly requests [an explanation] based on reason. Below, the Buddha answers him. First he establishes three answers, and next explains their characteristics. Adducing what comes after to answer what came before is called an "inverted answer"; maintaining silence to bring about understanding is explained as a "silent answer"; placing different dharmas side by side to cause doubt to be abandoned and adopted is called a "doubt answer." Pointing to the text, this can be understood. Below, within the three, he addresses the question with the first category. "I will now answer in an inverted manner" summarily indicates it. "Just as people in the world say there is milk and there are curds because they are definitely obtained, so it is named 'having'" is the inverted answer with respect to the analogy. Because when a cow eats grass and drinks water it definitely obtains milk, it is said to have milk. Because that which has milk definitely obtains curds, it is called having curds. "The buddha-nature is also like this: there is birth and there is the nature, because it will be seen in the future" is the inverted answer with respect to the doctrine.