摩訶止觀 8.34

8.34

為滿願故，須立要行；行之要者，莫先止觀。四分煩惱，體之即空，名「體真止入空觀」也。觀諸煩惱藥病等法，名「隨緣止入假觀」。觀諸煩惱同真際，名「息二邊止入中道觀」。善巧安心修此三止三觀，成一心三眼三智也。

To fulfill the vow, one must establish essential practices; among essentials of practice, nothing comes before calming and contemplation. Realizing that the four components of afflictions are themselves empty is called "calming that realizes the true, entering the contemplation of emptiness." Contemplating the medicines, illnesses, and other dharmas of afflictions is called "calming that accords with conditions, entering the contemplation of the provisional." Contemplating that afflictions are identical to the true reality is called "calming that ceases the two extremes, entering the contemplation of the middle way." Skillfully settling the mind and cultivating these three calmings and three contemplations accomplishes the three eyes and three wisdoms in a single mind.