成唯識論述記 3.602

3.602

述曰：顯可熏義，不能受熏是為過也。不為轉識熏成種過，常阿賴耶應不受熏，以是常故，如虛空等。若不受熏，即無生死、涅槃差別，此上解轉。總釋頌中恒、轉二字，四義受熏即皆具足，一、無記；二、堅；三、可熏非常一是；四、相應可為識熏是。

The Commentary states: This reveals the meaning of being perfumable; being unable to receive perfuming would be the fault. The fault of not being perfumed by evolving consciousnesses to form seeds is that a permanent ālaya would not receive perfuming, because it is permanent, like space. If it did not receive perfuming, there would be no distinction between saṃsāra and nirvāṇa. The above explains "turning." Summing up the explanation of the two words "constantly" and "turning" in the verse, the four criteria for receiving perfuming are fully complete: first, indeterminate; second, firm; third, perfumable—which is "not permanent or one"; fourth, concordant—which is "can be perfumed by consciousness."