首楞嚴義疏注經 7.174

7.174

迷畢竟無，成究竟有。有故立界，隔別不同，故云分段。非因而因，無住而住，因能生果，果住於因，因果相生，遷流不斷，世由此立。三世四方和合相涉，宛轉十二，變化有情亦十二也。

Being confused about ultimate non-existence, final existence is established. Because there is existence, space is established; being separated and distinct, it is called 'segmented.' That which is not a cause acts as a cause, and abiding occurs where there is no abiding; causes can produce effects, and effects abide in causes; cause and effect give rise to each other, flowing without interruption, and time is established from this. The three times and four directions intermingle and interact, multiplying into twelve, and the transformed sentient beings are also twelve.