成唯識論述記 4.453

4.453

The Commentary states: The substance of the nutriment of consciousness extends to all eight consciousnesses, yet the sense of nutriment is superior in the eighth consciousness; therefore the Mahāyānasaṃgraha and the Abhidharmasamuccaya both take only the eighth. The eighth is nurtured and augmented only by contact and volition, and also by material nutriment as a remote and indirect condition. Why is this eighth consciousness superior? Because it does not change, is constantly of one category, is without interruption, is perpetually continuous, and its holding and maintaining are superior.