俱舍論疏 17.142

17.142

論「後非所斷業至除異熟」，非所斷法對三明果。已上諸門若具釋所以，即費多言論。非為全要，但法略有功者，即自解之。

[On] the treatise's: "The subsequent, karma not to be abandoned... excluding ripening": this clarifies fruits for dharmas not to be abandoned relative to the three. If the reasons for all the gates above were explained in full, it would consume many words. It is not entirely essential; whoever has some slight skill in the Dharma will understand it on their own.