首楞嚴義疏注經 8.376

8.376

三段如前。恃己凌他，高舉為性，故名為慢。今云交凌、相恃、馳騁、流逸，慢之相也。血河等事皆所感報，由內致外因果相稱耳。飲之迷倒，故名癡水，西國有之。巨溺可知。

The three sections are as before. Relying on oneself and bullying others, taking lofty self-exaltation as its nature—hence it is named 'conceit' (māna). Now it says 'mutually encroaching,' 'reliance on oneself [over others],' 'surging,' and 'flowing,' which are the marks of conceit. Events such as rivers of blood are all the retributions provoked; emerging from within to the outside, cause and effect correspond to one another. Drinking it leads to delusion, hence it is called 'water of folly'; it exists in the Western Countries. 'Drowning in a great abyss' is readily understood.