成唯識論演祕 3.748

3.748

答：有二釋。一云雖後二蘊實剎那滅，初據攢剋，後依相續，約義分之，故有三蘊。二云方便所起善惡色心，由三性間故名一念。

Answer: There are two explanations. One says: Although the latter two aggregates in reality perish in a kṣaṇa, the first is based on an exact single instant, while the latter are based on continuity; dividing them by meaning, there are three aggregates. The second says: Wholesome and unwholesome matter and mind arisen through expedients are called a 'single moment' because they are interspersed among the three natures.