成唯識論述記 6.160

6.160

述曰：六識一時中，五皆不起，如非四境現前。於散、疑境等，率爾心起六識，皆無此欲等五。此舉麁顯，乃至等流亦有此事，准義應知。或第八識俱，此五亦無；第七識如前有諍，故知欲等非必定俱。

The Commentary states: At a single moment of the six consciousnesses, none of the five arises, such as when none of the four objects is present. Toward scattered objects, objects of doubt, and so forth, when a spontaneous mind arises, the six consciousnesses all lack these five—desire and so forth. This adduces the coarse and evident cases; even in the flowing state (niṣyanda) there is such an occurrence, as should be understood by inference. Or when concurrent with the eighth consciousness, these five are also absent; regarding the seventh consciousness, there are disputes as mentioned before, so we know that desire and so forth are not definitely concurrent.