成唯識論述記 4.682

4.682

述曰：若此業、果無因生者，入涅槃已，業、果還應生。設若救言無煩惱故入涅槃已，業、果不生者，難云：既許業、果無因而生。

The Commentary states: If this karma and fruit arose without a cause, then after having entered nirvāṇa, karma and fruit would still arise again. Suppose they rescue their position by saying that because afflictions are absent, after having entered nirvāṇa, karma and fruit do not arise; one objects, saying: since you accept that karma and fruit arise without a cause,