瑜伽論記 6.401

6.401

Second, the principle of function (kāryakāraṇa-yukti): namely, among the aggregates, the six sense faculties have the function of grasping objects, and the six sense fields have the function of serving as objects, down to dharmas serving as the object of the mind and being the sphere of the mind. Or further, the remaining seventeen dhātus serve as the object of the mind and the sphere of the mind; understanding by analogy in this way, each of the eight consciousnesses arises from causes and conditions, and its function of discerning its own object is also like this.