湘子韓仙訓

。欲戒淫行，先戒淫念；欲絕淫念，先須看破紅塵。何以能此？莫交淫友，莫入淫地，莫看淫書，莫聽淫話。如交淫友，則良朋遠違；入滛地，則身倒穢坑；看淫書，則心神迷惑；聽淫話，則正念難持。自然技癢心熱，把捉不定，游移俄頃，悔恨終身。言念及此，可不戒諸？

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Text and scans: Shidian Guji (Peking University – ByteDance open ancient texts). Edition details are given per book. Shidian Guji