俱舍論疏 24.77

24.77

論「前二剎那至以解脫道」，此明無間、解脫別也。即二無漏、一有漏三剎那心。先從無漏入有漏，此二剎那，如無間道正斷障故。第三從有漏入無漏，一剎那已斷障故，如解脫道。從其無漏入有漏易，從其有漏入無漏難故，立二無間、一解脫道。

The passage of the treatise starting with "The first two moments... by the path of deliverance" clarifies the difference between the uninterrupted path (ānantaryamārga) and the path of deliverance (vimuktimārga). Namely, the three moments of mind: two uncontaminated (anāsrava) and one contaminated (sāsrava). First entering the contaminated from the uncontaminated: these two moments, like the uninterrupted path, directly sever obstacles. The third moment entering the uncontaminated from the contaminated, because obstacles are already severed, is like the path of deliverance. Because entering the contaminated from the uncontaminated is easy, and entering the uncontaminated from the contaminated is difficult, two uninterrupted paths and one path of deliverance are established.