成唯識論掌中樞要 2.74

2.74

In the tenth proof, 'taking mind as the root': in the general clause of the various schools, conditioned and unconditioned, defiled and pure phenomena all take mind as their root. For the Sarvāstivāda and others, unconditioned phenomena are manifested by mind, and conditioned phenomena arise due to mind; because the causal efficacy of defiled and pure phenomena arising due to mind is most supreme, it is said to be the root. Therefore the sūtra says: 'If the mind is defiled or pure, sentient beings are defiled or pure.' Although the Sautrāntika master's intention is also like this, yet because mind receives perfuming and excels the faculties and the like, and because it pervades all realms, it is said that mind is the root. Although the general clause of conditioned phenomena and the specific clause of unconditioned phenomena are born due to mind—meaning that form and non-associated [formations] only begin to arise because mind serves as their homogeneous cause (sabhāga-hetu), co-arising cause (sahabhū-hetu), fruition cause (vipāka-hetu), and so forth. Although the principle is the same for the various mental factors, they are adjacent to the mind and abide only by relying on the mind. The preceding two clauses specifically address the Sarvāstivāda, and the subsequent two clauses address the Sautrāntika, as can be known from the text. The Commentary only recounts the four explanations of the Mahāyāna, while here it provides a general explanation. However, observing the intention of the subsequent text, it refutes both schools simultaneously, and therefore provides this explanation.