成唯識論演祕 3.199

3.199

有義：即五根體名為有根，無別能有。如有色言，所依色等體雖非根，而能有根亦名有根，根及有根和合積聚故名為身。

One interpretation: The substance of the five faculties itself is called "possessing faculties"; there is no separate possessor. Just as in the expression "possessing form", although the physical bases and so forth are not themselves faculties, because they are capable of possessing faculties they are also called "possessing faculties". Because the faculties and that which possesses faculties are assembled and accumulated, it is called "body".