大般涅槃經義記 5.52

5.52

第六番中，先就有漏以明因果，次就無漏以明因果，後就辯諦。先染後淨，欣厭故然；先果後因，逆觀故爾。

In the sixth section, first cause and effect are explained in terms of the contaminated, next cause and effect are explained in terms of the uncontaminated, and then the truths are discerned. Defiled first and pure afterward is due to aspiration and revulsion; effect first and cause afterward is due to reverse contemplation.