俱舍論頌疏論本 15.90

15.90

得永離地業，定招現法果者，此顯報定時不定業，謂阿羅漢人、不還，隨在何地，離此地染，名得永離地業。此永離地業聖未離染時，於此地中造善惡業，及離染位所修善業，此等諸業於異熟定時不定者，此業必能招現法果。謂於此地更不受生，故招現果。若於此地有生後定業，彼必定無永離染義，必於生後受異熟果。若於異熟及時俱不定者，由永離染故，更不受異熟。

Regarding "and karma that definitely ripens, / for one who has attained permanent detachment from a stage, / fruit in the present life is definitely brought about": This indicates karma whose retribution is definite and time indefinite. That is, for an arhat or a non-returner, in whichever stage they reside, being free from the defilement of this stage is called "having attained karma permanently detached from a stage". Regarding this karma permanently detached from a stage: when the noble one was not yet free from defilement, they performed good and evil karma in this stage; and there is good karma cultivated at the time of freedom from defilement. Among such karmas, those whose maturation is definite and time indefinite will definitely bring about fruit in the present life. That is, because one will no longer take birth in this stage, it brings about fruit in the present life. If in this stage there is karma definite for the next or subsequent lives, they definitely cannot have permanent freedom from defilement, and must experience the maturation fruit in the next or subsequent lives. If both maturation and time are indefinite, then because of permanent freedom from defilement, they will never again experience maturation.