瑜伽論記 6.105

6.105

住處障有五：初四即不隨順性；第五、或於晝夜多諸諠逸下合為一種，名於二處十一種障，或行處合為一定之方便名為行處。

Among the obstacles of the dwelling place, there are five: the first four are non-conducive natures; the fifth, from "or day and night there is much noise and distraction" onward, is combined into one kind. These are called the eleven kinds of obstacles in two bases. Alternatively, the sphere of activity is combined into one, being the expedient for concentration, called sphere of activity.