大乘義章 2.55

2.55

第四門中約時分異。三世法中而得滅者，是其數滅；未來法中而得滅者，是非數滅。現起法中而得滅者，是無常滅。

In the fourth section, differences are distinguished according to time. That which attains cessation among dharmas of the three time periods is cessation through deliberation. That which attains cessation among future dharmas is cessation not through deliberation. That which attains cessation among currently arising dharmas is impermanent cessation.