瑜伽論記 8.37

8.37

又攝樂作意名對治作意及順清淨作意者，順清淨作意者，當二十七。順清淨作意者，謂修六隨念即念佛等，若攝樂作意斷中品惑故名對治作意，以明緣六念修別樂觀清淨涅槃佛等亦名清淨，別緣此故不共遠離等一處明，又前遠離等不收順清淨作意故，此同收。

Furthermore, regarding "The attention that integrates joy is called counteractive attention and attention conforming to purity," attention conforming to purity corresponds to the twenty-seventh. As for attention conforming to purity, it means cultivating the six recollections, namely mindfulness of the Buddha and so forth. If it is the attention that integrates joy, because it abandons intermediate afflictions it is called counteractive attention. Because it clearly takes the six recollections as objects to cultivate a distinct contemplation of joy, and pure nirvāṇa, the Buddha, and so forth are also called pure, and because it separately takes these as objects, it is not explained in the same place together with detachment and so forth. Furthermore, because detachment and so forth above do not subsume attention conforming to purity, this one subsumes it together [with counteractive attention].