大般涅槃經義記 4.34

4.34

自下第二喻說教入。先舉喻事，「如是酪性為從乳」下廣辨喻相，約之顯法。文別有四：一破定有無，顯前第二有無不二；二「是牛食噉水草」已下明乳酪等前後性同，顯上第四前後無二；三「迦葉白」下廣前第一有無不二；四「是牛食噉草因緣」下廣前第二前後不二。

From here below is the second part: teaching entry by means of metaphorical exposition. First it raises the metaphorical situation; from "Is such a nature of curd derived from milk" onward, it elaborates the details of the metaphor, revealing the doctrine by reference to it. The text has four distinct divisions: first, refuting determinate existence and non-existence to reveal the second [theme] above, that existence and non-existence are non-dual; second, from "This cow eats water and grass" onward, clarifying that milk, curd, and so on are identical in nature before and after, revealing the fourth [theme] above, that before and after are non-dual; third, from "Kāśyapa addressed the Buddha" onward, expanding on the first [theme] above, that existence and non-existence are non-dual; fourth, from "Conditioned by this cow eating grass" onward, expanding on the second [theme] above, that before and after are non-dual.