俱舍論疏 6.16

6.16

The Śāstra says, “Although they lack the function of obstructing... they can also be as stated before,” which points to things to give an answer. If something is potent, because it does not obstruct now, it can be its cause. That which is impotent can also be its cause because it does not obstruct now. Although the obstructions of the potent and the impotent differ, their meaning of non-obstruction at the time of arising is identical; therefore, both are equally causes. The Nyāyānusāra explains: “Because all dharmas mutually possess the power of obstruction when viewed against each other, they can be causes. That is, where this one dharma exists, that place cannot accommodate a second. Even if this dharma existed elsewhere, that place could not accommodate other dharmas either. How could such dharmas, viewed against each other, not all be capable of obstructing and yet not obstruct? Therefore, they can all be established as efficient causes. Immaterial dharmas also have determinations of temporal basis and so forth, so when viewed against each other they also possess the power of obstruction. Furthermore, when among all dharmas a single dharma arises, like a dharma granting desire, all the rest are without obstruction. That is, a dharma fails to arise due to two conditions: first, the absence of concordant causes; second, the presence of discordant conditions. The state of arising of all dharmas necessarily depends on superior power and distinct internal conditions, as well as on the rest abiding without obstruction.”