俱舍論頌疏論本 4.74

4.74

非得此相違者，釋非得自性也。應知非得與此相違，謂若有法先未曾失，及重得已，但今初失，此法非得，創至生相，名為不獲。流入現存，名為不成就。故知不獲時不名不成就，不成就時不名不獲。

"Non-acquisition is the opposite of this" explains the intrinsic nature of non-acquisition. One should know that non-acquisition is the opposite of this: if there is a factor that was previously never lost, or that had been reacquired, and is now lost for the first time, the non-acquisition of this factor, newly arriving at the characteristic of arising, is called "non-gaining"; flowing into present subsistence, it is called "non-possession." Thus we know that at the time of non-gaining it is not called non-possession, and at the time of non-possession it is not called non-gaining.