敦煌写本。首尾残，共二十九行，五百二十三个音节。龙谷大学藏本汉文原本对勘补残正误。由英国西门华德比定出来并做了转写。以答问记录的形式（问者、答者不明）解释佛教禅宗的若干概念，如"禅观"、"禅法"、"观门"等。又古藏文音译汉字写本长卷正面九十至一百十七行，也有相同文献的另一音译本。两本音译特征一致，关系密切，应是一本抄自另一本。
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