完整原文 · 分页阅读 当前仅加载大正藏 0057a 版页;异文与注释未混入正文,稳定行号可直接引用。
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在於二禪中滅,為欲彰此是不動禪,免絕
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四受,故此說斷。亦可指彼三禪之樂以為
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苦故,斷三禪樂即名斷苦。何故如是?彼三
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禪樂,望麁心人說之為樂,望後靜心即是
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大苦。如似世間指手打木,於彼寤者說之
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為樂,睡眠之人用為大苦。此亦如是,故說
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斷樂。斷樂者,斷三禪樂。彼樂麁動,故此斷
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之。先滅憂者,初禪滅也。先滅喜者,三禪滅
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也。並在前滅,是故言先。既非此滅,何故論
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之?亦為顯此不動禪故。若使憂喜前地斷
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故彰先滅者,苦亦先滅,何不說先?釋言彰
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先,理亦無傷。但此為明苦雖先斷,對苦
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之樂此中斷故,對樂之苦不得言先。若當
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說言先斷苦者,人謂彼樂亦是先斷,故不
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彰先。憂之與喜,能對所對並是先斷,故云
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先滅。不苦樂者,是其利益。餘禪之中皆先明
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治,今此何故先說利益?乘前所明斷苦斷
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樂,對之即明不苦不樂,彰益義便,故先論
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之,行實在後。此乃捨受,不同苦樂,是故名
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為不苦不樂。何故不名不憂不喜?釋有三
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義:一以此禪正斷樂受而復無苦,翻對彼
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二,是故名為不苦不樂;二前文中先斷苦
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樂故,此偏對之,明不苦樂;三五受中憂喜
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名別,三受分別,憂喜二名攝入苦樂,苦樂寬
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故,捨受對之名不苦不樂。捨念淨者,是其對
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治。捨是捨支,念是念支,前三禪中有樂故捨
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念不淨,今此無故捨念淨也。入四禪行,是其
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禪體一心支也。四空定義,廣如別章,此應論
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之。四空定文,如論分別。順法行者,為依禪
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