維摩經玄疏 5.29

5.29

一、心含法本義，《提謂經》云「心是萬行之本，眾靈之源。出入無亂，往來無間，統御一身，以立道根」，此是言說之本，即教本也；萬行之本，即行本也；以立道根，即理本也。

First, the mind contains the sense of the "root of dharmas": the Tiwei jing says, "The mind is the root of myriad practices, the source of all spirits. Entering and exiting without confusion, coming and going without interruption, it governs the whole body to establish the root of the path." This is the root of speech, namely the root of teaching; the root of myriad practices is the root of practice; establishing the root of the path is the root of principle.