成唯識論述記 6.181

6.181

述曰：欲通三受俱，除憂、苦二，以此二境是逼迫法。方生憂、苦，欲緣所樂，故非二受俱。又五識中無此等五，欲非苦俱，受如前說。

The Commentary states: Desire is associated with three feelings, excluding grief and suffering, because the objects of these two are distressing phenomena. Only when these occur do grief and suffering arise; desire takes what is delighted in as its object, so it does not associate with these two feelings. Moreover, among the five consciousnesses, these five [particular-object factors] are absent, and desire is not associated with suffering; feelings are as explained before.