瑜伽師地論略纂 6.28

6.28

四眾中，唯明男子四眾，無鄔波斯迦。又鄔波斯迦，素迦所攝，俱從在家中戒為性故，別離出之。

Among the four assemblies, only the four male assemblies are clarified, without upāsikās. Furthermore, upāsikās are subsumed under the white-robed (śukla), both having morality among householders as their nature; thus they are distinguished and separated out.