成唯識論述記 8.163

8.163

述曰：離繫果五因得，以望士夫為觀待，故不說得之。以望清淨有為牽引，故亦不得。餘因不得，義可知也，然依處寬狹，如前可知，此唯增上緣得。

The Commentary states: The fruit of disjunction (visaṃyoga-phala) is obtained by five causes. Because [regard] is viewed with respect to a person, it is not said to be obtained [by it]. Because [leading-forth] is viewed with respect to pure conditioned [dharmas], it is also not obtained [by it]. That the remaining causes do not obtain it can be understood in principle. The breadth and narrowness of the bases can be understood as before. This is obtained solely by the sovereign condition.