成唯識論述記 6.108

6.108

述曰：又汝若言：令剎那頃能住一境，心不易緣，故遍行攝者，理亦不然。一剎那心等，自然於一境無改易義，何須定爾？非一念心緣此復可更緣彼故。彼謂：不然，心等性不定，非唯一念能住一境；由此經言：心如猨猴，難禁制故。故若一念住一境者，此由定數故有爾也。問：彼設無定者，一念之心亦易緣不？彼言：若無於定心住一境，則貪等無心自成染，此例不然。專注所緣必由定有，心住於境豈假定爾？不可以貪等無而不成染，便言定等無時心不緣慮。緣慮之事，心先自成，豈假餘法，其心剎那住境亦爾。若緣慮時必住境故，但深取境假定方能。由此心等不假於定，一念之中能住於境。

The Commentary states: Furthermore, if you say: 'It causes [the mind] to be able to abide on one object for the duration of a kṣaṇa without changing its object, and therefore it is subsumed under the omnipresent factors'—this principle is also incorrect. A single moment of mind, etc., naturally has no meaning of changing with respect to a single object; why would concentration be required for this? It is not as if a single thought-moment, having cognized this, could again cognize that. They might say: 'That is not so; the nature of the mind, etc., is unfixed, and it cannot abide on a single object for just one moment; hence the sūtra states: "The mind is like a monkey, difficult to restrain." Therefore, if in a single moment it abides on one object, this exists due to the mental factor of concentration.' Question: Suppose there were no concentration, would a single moment of mind also shift its object or not? They say: 'If without concentration the mind could abide on one object, then without greed, etc., the mind would naturally become defiled.' This analogy is incorrect. Focused attention on an intentional object must exist due to concentration, but why should the mind's mere abiding on an object depend on concentration? One cannot say that just as without greed, etc., the mind does not become defiled, likewise when concentration, etc., are absent, the mind does not engage in cognitive deliberation. Cognitive deliberation is already established by the mind itself; how could it rely on other dharmas? The mind's abiding on an object for a kṣaṇa is also like this. If when engaging in deliberation it necessarily abides on an object, it is only for deeply grasping the object that it relies on concentration to be capable. Hence, the mind and associates do not depend on concentration to be able to abide on an object within a single thought-moment.