俱舍論記 24.159

24.159

「且無色中至能得見道」者，答。且無色中無正聞故，離聞正教必定無容入見道故。此釋無聞。又身生彼無色界中不緣下故，見道先緣欲界苦故，此釋無緣下。由此無色非見道依。色界異生著勝定樂，又無苦受不生勝厭故，非無有勝厭能得見道。此釋無厭。故依色界身不起見道。

Regarding "First, in the formless [realm] ... can attain the path of seeing": this is the answer. First, because in the formless realm there is no proper hearing [of the teaching], and apart from hearing the correct teaching there is definitely no possibility of entering the path of seeing. This explains "lack of hearing." Furthermore, one born in that formless realm does not take lower [realms] as an object, and the path of seeing first takes the suffering of the desire realm as an object; this explains "not taking the lower as an object." Therefore the formless realm is not a basis for the path of seeing. Ordinary beings of the form realm are attached to the bliss of superior absorption, and having no painful feelings they do not generate superior revulsion; and without superior revulsion, one cannot attain the path of seeing. This explains "lack of revulsion." Thus relying on an embodiment in the form realm, the path of seeing does not arise.