大般涅槃經義記 4.320

4.320

第六生彼外道謗中，皆先立喻，次合顯法，後呵說病。

In the sixth, on the slander arising among those non-Buddhists, in all cases it first establishes an analogy, next applies it to illuminate the Dharma, and finally scolds the statement that [the Buddha] has an illness.