成唯識論掌中樞要 2.191

2.191

第四既言極熏修第十地故，第十地生彼。八地已去既受變易生，如何十地更熏修生彼？即是八地已生第四定下三天處，今極純無漏勝前三地業，資感今業而得生彼，據實非更新生，以同地業於彼受果處往，名「生同地」，名「生往」。地別故，名之為「往」，不相違也。第四句非二所資而生，即一切欲界異生等以色界等業定心住境，名為「不動」，非不異處受故名不動。既言第十地菩薩四禪之主故，於自在宮起十種果相，現大寶蓮華座，故要得生彼，非第八地已得生彼。唯說第十地極熏修故。又八地菩薩非彼主故，亦非變易有生死故，設許死生，何者新生業。

Since the fourth [alternative] states that on account of supreme cultivation of the tenth ground, the tenth ground is born there: given that those from the eighth ground onward have already undergone transformative birth, how could the tenth ground further cultivate to be born there? It is simply that the eighth ground was already born in the lower three heavenly stations of the fourth dhyāna, and now, being purely uncontaminated and surpassing the karma of the previous three grounds, it assists in inducing present karma so as to be born there; in actuality it is not a newly renewed birth, but because karma of the same plane proceeds to that place of receiving the retribution, it is called "being born in the same plane" and called "going to be born." Because the planes are distinct, it is called "going"; they do not contradict each other. The fourth alternative is being born without being supported by either [contaminated or uncontaminated mixed cultivation]: that is, all desire-realm ordinary persons and so forth fix their mind upon an object through karma of the form realm and so forth, which is named "unmoving"; it is not called unmoving because it is not experienced in a different place. Since it is said that the bodhisattva of the tenth ground is the lord of the four dhyānas, and therefore manifests the ten kinds of fruit aspects and displays the great jeweled lotus throne in the palace of Maheśvara, he must necessarily be born there, and the eighth ground cannot already have been born there. It is said only that the tenth ground undergoes supreme cultivation. Furthermore, the bodhisattva of the eighth ground is not the lord thereof, nor does transformative [existence] possess death and rebirth; even if death and rebirth were granted, what newly generated karma could there be?