瑜伽論記 7.442

7.442

六、解了加行，謂於如是所說諸相善取善了知入住出所有諸定隨意皆能，或時棄捨定境影像，作意思惟欲界散心所緣本質諸境界等，名解了加行者，此據解了定心相分影像似，散心所緣本性之境，如此即名捨影像觀質，三藏云：棄捨定中所緣影像，乃緣本林中骨鎖本質。

Sixth, "preparatory application of clear comprehension": this means that regarding these explained characteristics, one grasps them well and clearly comprehends them well; entering, abiding in, and emerging from all concentrations, one is capable in all respects as one pleases; or at times abandoning the image of the concentrated realm, mentally paying attention to all objective realms that are the original archetypes focused upon by the distracted mind of the desire realm, etc.—this is called the preparatory application of clear comprehension. This is based on clearly comprehending that the image of the objective aspect of the concentrated mind resembles the original nature of the objective domain focused upon by the distracted mind; this is called abandoning the image to contemplate the archetype. The Tripiṭaka Master says: "Abandoning the image focused upon in concentration, one then focuses upon the original archetype of the chain of bones in the forest."