俱舍論疏 3.182

3.182

論「若成女根至信等五根」，此釋定成八根。若成就女、男、憂根，定身在欲界，所以七如苦說。第八即是女、男、憂根。有女、男根容離欲，憂非定成。有憂根容無形故，女、男二根非定成就。若成信等五根，定成八根。意、命、捨三一切有故，定成三根。異生生無色界，無七色根及四受故；是異生故，不成三無漏根。由此唯八根定。十四不定。

On the Śāstra's statement: 'If one possesses the female faculty up to the five faculties of faith and so forth,' this explains the definite possession of eight faculties. If one possesses the female, male, or grief faculties, one is definitely physically present in the desire realm, and so the seven are as explained for pain. The eighth is the female, male, or grief faculty itself. One who has the female or male faculty may be detached from desire, so grief is not definitely possessed. One who has the grief faculty may be sexless, so the female and male faculties are not definitely possessed. If one possesses the five faculties of faith and so forth, one definitely possesses eight faculties. Because mind, vitality, and equanimity exist in all, one definitely possesses these three faculties. When an ordinary person is born in the formless realm, they lack the seven material faculties and the four sensations; and because they are an ordinary person, they do not possess the three anāsrava faculties. Thus only eight faculties are definite, while fourteen are indefinite.