首楞嚴義疏注經 10.27

10.27

初二句標，何以下出所以，今盡下正顯末無因義。以本無因故，末亦如是。八萬劫前不見菩提，八萬劫後亦復如是。以見本無，末亦無也。知人生人等者，人只生人，無因生鳥；鳥只生鳥，無因生人。此皆不知新造異業，感異類生，故成此執。

The first two lines designate [the view]; from "Why is this?" down presents the reason; from "and so it will be until the end of this physical form" down directly reveals the meaning that the outcome lacks a cause. Because the origin has no cause, the outcome is also like this. Before eighty thousand eons, bodhi was not seen; after eighty thousand eons, it will also be like this. Because he sees that the origin is non-existent, the outcome is also non-existent. "He knows that humans give birth to humans," and so on, means that humans only produce humans, without a cause producing birds; birds only produce birds, without a cause producing humans. All of this stems from not knowing that newly created different karmas induce rebirth in different kinds; hence this attachment is formed.