俱舍論疏 2.14

2.14

論「或復礙者至和會轉故」，第二釋也。此是能緣、所緣。有境與境和會起時，名為有對，竝非是礙體、礙取果等。

The treatise says: "Or furthermore, 'obstruction' means... because they operate having converged." This is the second explanation. This refers to the grasper (cognizer) and the grasped (object). When that which possesses an object and the object arise having converged, it is called having opposition; it is definitely not an obstruction of substance or an obstruction of taking a fruit, and so forth.