瑜伽論記 16.340

16.340

由三門至攝受餘生者，謂中有之身，由三食故增長業惑，業惑全發，五支種子牽生老死故。

As for 'proceeding through three doors up to grasping subsequent rebirth': this means that the body of the intermediate existence, due to the three foods, increases karma and afflictions; when karma and afflictions are fully activated, the seeds of the five factors draw forth birth, aging, and death.