瑜伽論記 6.319

6.319

略義中，初結前問後；次正解釋，後結之。解中，初開三門；後別徵解。徵解有三：一、釋行業即九中前五也；二、釋住業亦有五：一者、身業即是第六行住坐；二者、語業即是第八語；三者、意業即是第六臥第八默第九解睡；四者、晝業；五者、夜業。此二即是第七習悎寤中晝業夜業身語二業，此云若臥若默名住時意業者，此中臥應在身業中以臥時思光明想故名意業，非臥者是意，又若臥者此言顯示住時夜業者，又取第六行住坐臥中臥亦是住五業中第五夜業，此臥前入意業中攝，今入夜業中攝，一法兩用。

In the summary of meanings, it first concludes the preceding and asks about the following; next, it explains directly; afterwards, it concludes it. In the explanation, it first opens three gates, and afterwards examines and explains them individually. There are three examinations and explanations: First, explaining the activities of action, which are the first five among the nine. Second, explaining the activities of dwelling, which also have five: 1. bodily karma, which is the sixth—walking, standing, and sitting; 2. verbal karma, which is the eighth—speaking; 3. mental karma, which is the sixth—lying down, the eighth—remaining silent, and the ninth—dispelling sleepiness; 4. daytime activities; 5. nighttime activities. These two are the bodily and verbal karmas of daytime and nighttime activities in the seventh—practicing waking. Where it says here that lying down or remaining silent are called mental karmas during dwelling: here, lying down should be within bodily karma, but because when lying down one contemplates the perception of light, it is called mental karma; it is not that lying down itself is mind. Furthermore, regarding 'if lying down', this statement indicates nighttime activity during dwelling; moreover, taking lying down from the sixth—walking, standing, sitting, and lying down—it is also the fifth, nighttime activity, among the five activities of dwelling. This lying down was previously subsumed under mental karma, and is now subsumed under nighttime activity: a single phenomenon with two functions.