俱舍論頌疏論本 9.6

9.6

本有謂死前居生剎那後者，本過去業所感之有，名為本有。此之本有在死有前、居生有後，中間諸蘊為本有體。言生有者，初受生時一剎那蘊也。言死有者，最後命終一剎那死蘊也。欲、色二界具足四有，若無色界唯闕中有，有餘三有。

Regarding "The prior existence is before death and situated after the moment of rebirth": the existence resulting from past karma is called the prior existence. This prior existence precedes existence at death and follows existence at rebirth, and the aggregates in between constitute the essence of prior existence. "Existence at rebirth" refers to the aggregates of the single moment when rebirth is first received. "Existence at death" refers to the dying aggregates of the single moment of final demise. The desire and form realms are complete with all four existences; the formless realm lacks only intermediate existence, having the remaining three existences.