成唯識論述記 3.518

3.518

論：又觸等五至亦如是言。

[Treatise:] Furthermore, the five, such as touch, are also like this consciousness: having true maturation, their cognitive objects and cognitive representations are both unknowable, they cognize the three kinds of objects, and they are associated with the five dharmas; therefore, the verse says 'are also like this'.