成唯識論述記 4.45

4.45

述曰：此第二義，業、惑、中有，亦是頌中所說。諸趣業、惑、中有，是能趣故。何故能趣亦名為趣？趣是所趣，業、惑、中有，相從名趣。

[The Commentary states:] This is the second interpretation: karma, defilement, and the intermediate existence are also what is spoken of in the verse. Karma, defilement, and the intermediate existence of the various realms are that which goes to the realms. Why is that which goes to the realms also called a "realm"? A realm is that to which one goes; karma, defilement, and the intermediate existence are called realms by association with it.