瑜伽師地論略纂 2.43

2.43

Under crafts, "merely for entertainment and pleasure" and so forth: in other places it is said that this actually extends to the three natures, but here it only selects out the defiled, because the characteristics are difficult to discern. That is, if for entertainment and pleasure, greed, restlessness, and so forth arise. "Not for livelihood": because it is for practicing skills and selective discernment. These crafts for entertainment and pleasure are defiled; for livelihood and practicing skills, their entities are actually neutral (avyākṛta); selective discernment is wholesome, because wholesome mind, prajñā, and so forth arise through selective discernment.