瑜伽論記 18.51

18.51

言十一種障，隨一現前者，十二障中總前後十一種障隨一現前為第六障礙障，更無別體也。業，有二。謂思及思已者，意業名思，身語名思已。

Where it says 'any one among the eleven kinds of obstacles becoming manifest': among the twelve obstacles, when any one of the former or latter eleven obstacles becomes manifest, it constitutes the sixth obstacle, the obstacle of obstruction, having no separate entity. As for 'karma has two kinds: volition and having willed', mental karma is called volition, and bodily and vocal karma are called having willed.