大般涅槃經義記 8.242

8.242

下重問答顯無因義。師子先問，「如佛所說涅槃無因是義不然」非破令無。下牒佛說，推為六中有時無因，非一向無。「若言無者則合六無」牒以總推。次辯六無，皆初列名、後辯可知。「涅槃亦」下別明涅槃合彼六中有時無因。

Below, it again uses questions and answers to reveal the meaning of being without a cause. Siṃha first challenges: "As the Buddha has said, that nirvāṇa is without a cause is an incorrect meaning," negating and refuting it so as to eliminate it. Below, he reiterates the Buddha's teaching and deduces that among the six kinds of non-existence, it is a temporal non-existence of cause, not an absolute non-existence. "If one says it is non-existent, it then conforms to the six non-existences" reiterates it to deduce generally. Next, he explains the six non-existences; in all cases, the names are first listed, and the subsequent explanation can be known. From "nirvāṇa also" onward, he specifically explains that nirvāṇa conforms to temporal non-existence among those six.