成唯識論述記 6.574

6.574

述曰：染、憎不俱，境既不同，行相亦別，以相違故。若爾，貪俱憂、苦，相返瞋俱樂、喜為例亦爾，何得相應愛、迫二境得俱起故。行相不違，故無此失，如下當知。

The Commentary states: Attachment and aversion do not occur together; since their objects are different, their cognitive modes (ākāra) are also distinct, because they are mutually contrary. If so, would the grief and suffering associated with attachment, and conversely the pleasure and joy associated with anger, be the same by analogy, so that they could not associate? Because the two objects of attachment and oppression can arise together, their cognitive modes are not in conflict, so there is no such flaw, as will be known below.