俱舍論疏 16.11

16.11

論「不善業果至惡勝善故」，答也。於地獄中不善業果，不為善業果之所雜也。欲界善果，定為不善業果所雜，六欲天中有不善果故。以欲界散地惡勝善故，惡必雜善，善不雜惡。《正理論》云「此難非理。以欲界中不善數行力能伏善，故彼苦果雜樂異熟。欲界善劣，無有功能陵伏不善，故彼樂果亦無功能雜苦異熟，故惡業果得純黑名。」

The Śāstra says: "The fruit of unwholesome karma […] because the evil prevails over the wholesome"—this is the answer. In the hells, the fruit of unwholesome karma is not mixed with the fruit of wholesome karma. The wholesome fruits of the desire realm are definitely mixed with the fruits of unwholesome karma, because within the six desire heavens there are unwholesome fruits. Since in the unfocused realms of the desire realm evil prevails over the wholesome, evil necessarily mixes with the wholesome, but the wholesome does not mix with evil. The *Nyāyānusāra* says: "This objection is unreasonable. Because in the desire realm the unwholesome occurs frequently and has the power to overpower the wholesome, its painful fruit mixes with the pleasurable maturation. Wholesome [karma] in the desire realm is weak and has no capacity to encroach upon and subdue the unwholesome; therefore, its pleasurable fruit also has no capacity to mix with the painful maturation. Hence, the fruit of bad karma receives the name 'purely dark'."