摩訶止觀 4.147

4.147

○第三、棄五蓋者，所謂貪欲、瞋恚、睡眠、掉悔、疑。通稱「蓋」者，蓋覆纏綿，心神昏闇，定慧不發，故名為「蓋」。前呵五欲，乃是五根對現在五塵發五識。今棄五蓋，即是五識轉入意地，追緣過去、逆慮未來五塵等法，為心內大障。喻如陶師，身中有疾，不能執作。蓋亦如是，為妨既深，加之以棄。如翦毒樹，如檢偷賊，不可留也。《大品》云：「離欲及惡法。」離欲者，五欲也；如前所呵。惡法者，五蓋也，宜須急棄。

Third, discarding the five hindrances: namely, sensual desire, ill will, drowsiness and sleep, restlessness and remorse, and doubt. They are collectively called 'hindrances' because they cover and entangle [the mind], the mental spirit becomes dark, and concentration and wisdom do not arise; therefore they are called 'hindrances'. The previous rebuking of the five desires concerned the five sense faculties confronting the present five dusts to give rise to the five consciousnesses. Now, discarding the five hindrances means that the five consciousnesses turn and enter the mental ground, pursuing past or anticipating future dharmas such as the five dusts, serving as major inner obstacles to the mind. It is like a potter whose body is ill and who cannot perform his work. The hindrances are also like this: because their hindrance is profound, one additionally discards them. It is like cutting down a poisonous tree or arresting a thief; they must not be kept. The Pañcaviṃśatisāhasrikā-prajñāpāramitā Sūtra states: 'Detach from desires and bad dharmas.' Detaching from desires refers to the five desires, as rebuked before. Bad dharmas refers to the five hindrances, which must be discarded urgently.