成唯識論述記 5.636

5.636

述曰：第二，破薩婆多等。彼小乘言，思量名意，過去心是。今破不然，識現生時，意已謝滅，現無思量之用。過去之心，如何名意？

The Commentary states: Second, refuting the Sarvāstivādins and others. Those Hīnayāna masters say that ratiocination (manyanā) is called manas, and that it is the past citta. Now we refute them: it is not so. When consciousness is presently arising, manas has already passed away and ceased, lacking the function of ratiocination in the present. How could past citta be called manas?