釋禪波羅蜜次第法門 10.29

10.29

答曰：是中應用四義分別：一者、不淨不淨；二者、不淨淨；三者、淨不淨；四者、淨淨不淨。不淨者，如欲界三十六物之身性相已是不淨。不淨觀力，更見此身胮脹、膿爛、青瘀、臭處，此則不淨中更見不淨。不淨淨者，如白骨本是不淨之體，諦心觀之，膏膩既盡，如珂如貝，白光焴爍，此則不淨中淨也。淨中不淨者，從初背捨來，雖有淨光，但此光明有三種不淨因緣：一者、出處不淨，謂從骨人出也；二者、所照不淨，謂照外境也；三者、光體未被鍊故不淨，譬如金不被鍊，滓穢未盡，光色不淨。以是因緣，初禪雖有光明，不名緣淨故淨；二禪雖無白骨，光從內淨而出，猶照外不淨，而未被鍊，及大喜故，亦得名為緣淨。今言淨淨者，八色光明本是淨色，今於此地又離三種不淨，故淨言淨淨，亦名緣淨故淨。既淨義具足，所以說為淨背捨也。

Answer: Here four meanings should be applied for differentiation: first, impure-impure; second, impure-pure; third, pure-impure; and fourth, pure-pure. 'Impure' means that, as with the body of thirty-six elements in the desire realm, its nature and marks are already impure; and by the power of the contemplation of impurity, one further sees this body as bloated, festering with pus, bruised, and foul-smelling—this is seeing further impurity within impurity. 'Impure-pure' means that although white bones are fundamentally an impure entity, when one contemplates them with a focused mind until their grease and marrow are exhausted, they are like mother-of-pearl or conch shell, shining with white light—this is purity within impurity. 'Pure-impure' means that although there is pure light from the first liberation onward, this light has three causes and conditions of impurity: first, its place of emergence is impure, meaning it comes out from the skeleton; second, what it illuminates is impure, meaning it illuminates external objects; third, the substance of the light is impure because it has not yet been refined, just as unrefined gold has not had its dross completely removed and its luster is not pure. Due to these causes and conditions, although the first dhyāna has light, it is not called 'pure because the object is pure.' Although the second dhyāna has no white bones and its light emerges from internal purity, it still illuminates external impurities, has not yet been refined, and is accompanied by great joy; thus it cannot be called 'pure due to the object.' Now, 'pure-pure' means that the eight-colored light is fundamentally pure form, and here at this stage it is also freed from the three kinds of impurity; hence it is called 'pure-pure,' and is also called 'pure because the object is pure.' Because the meaning of purity is fully complete, it is therefore spoken of as the pure liberation.