金師子章雲間類解 1.16

1.16

前之四門，真俗有無皆成對待；今此一門唯辨妙性本無增減，故第五說無生。

In the previous four gates, ultimate and conventional, existence and non-existence, all formed dualities; now this single gate exclusively distinguishes that the wondrous nature originally has neither increase nor decrease. Therefore, fifthly, anutpāda is explained.