俱舍論疏 2.180

2.180

論「又開一眼至二眼俱見」，論主自釋二眼見也。一類師云：但被觸眼所引意識，妄謂見二，其第二月非觸眼見者。不然。兩眼同見一月，由根移動見處不同，由此意識謂為二月。若謂開一觸一見月有二，非是兩眼各見一月者，閉一觸一因何不見二月？此如兩眼互開見物雖同，而物處別。又若謂第二月非觸眼見者，論主因何證兩眼見，雖同一物兩眼見異，引意識起謂為二月。又若兩月非各一眼見者，因何障被觸眼，第二月無、第一月在；障不觸眼，第一月無、第二月在。又若以被觸之眼見月參差，即謂第二之月唯意識了。若兩眼時參差而觸，所見之月竝悉參差，豈可兩眼俱不見月？若謂不見，從何識後引意識生謂二月耶？餘文易了。

On the Śāstra's statement: "Furthermore, when one opens one eye [...] both eyes see together": the author of the Śāstra himself explains seeing with two eyes. One group of masters says: It is merely the mental consciousness induced by the touched eye that falsely deems two to be seen, and that second moon is not seen by the touched eye. This is not so. Both eyes see one moon together; because the sense-faculty is displaced, the locations seen are not the same, and because of this the mental consciousness deems there to be two moons. If one claims that opening one and pressing one makes one see two moons, and that this is not the two eyes each seeing one moon, why does closing one and pressing one not make one see two moons? This is just as when the two eyes are opened alternately, though they see the same object, the object's location differs. Furthermore, if one claims that the second moon is not seen by the touched eye, on what grounds would the author of the Śāstra prove that two eyes see—that although it is the same object, the seeing of the two eyes is different, inducing the arising of mental consciousness to deem there to be two moons? Furthermore, if the two moons were not seen by each eye individually, why is it that when the touched eye is obstructed, the second moon disappears while the first moon remains, and when the untouched eye is obstructed, the first moon disappears while the second moon remains? Furthermore, if because the moon seen by the touched eye is displaced, one immediately claims that the second moon is cognised only by mental consciousness, then if both eyes were displaced and pressed at the same time, the moons seen would all be displaced—could it be that neither eye sees a moon? If you claim they do not see, after which consciousness is mental consciousness induced to arise and deem there to be two moons? The remaining text is easy to understand.