大方廣圓覺修多羅了義經略疏 2.105

2.105

六種染心也。三細乃至起業受報，是續生死義故。故彼論云：「此清淨心為無明所染，有其染心。」染心義者，名煩惱礙等，廣如彼說。

These are the six kinds of defiled mind. Because from the three subtle marks up to generating karma and receiving retribution, it perpetuates saṃsāra. Thus that treatise says: 'This pure mind is defiled by avidyā, and has defiled mind.' The meaning of defiled mind is called the affliction hindrance, etc., as explained in detail there.