首楞嚴義疏注經 1.180

1.180

心目是本，塵勞為末，若迷本之依處，群末難除。染污故名塵，擾惱故名勞，即通指二障也。

The mind and eyes are the root; the dusts and toils are the branches. If one is deluded about the basis of the root, the manifold branches will be difficult to eliminate. Because they defile, they are called 'dusts'; because they disturb and afflict, they are called 'toils'—this refers generally to the two obscurations.