瑜伽論記 5.195

5.195

若觀諸色等者，泰云：八勝處定並觀定色故名若觀色，定心內色似定外色故，云如觀，三解脫前雖有八勝處，而於三解脫並名方便，八望三解脫為方便道，故隨解脫云三勝處，此中在於定心觀定外所似色，然定內色不同定外色種種觀故，經中名勝知勝見定，名現語故名為智惠，有尋求故名為見，如觀勝定內色時智見尋思了別定內似色類定外色，亦則是尋思了別定外色，故云亦爾。

Regarding "if one contemplates forms, etc.": Tai says that because the concentrations of the eight stations of mastery all contemplate concentrated form, it is called "if one contemplates form"; because the form inside the concentrated mind resembles form outside concentration, it says "as if contemplating." Although the eight stations of mastery precede the three liberations, with respect to the three liberations they are all called preliminary means. The eight, viewed with respect to the three liberations, are the path of preliminary means; therefore, corresponding to the liberations, they are called the three stations of mastery. Here, within the concentrated mind, one contemplates the resembled form outside of concentration; but because form inside concentration differs from the diverse contemplation of form outside concentration, the sūtra names it superior knowing and superior seeing. In concentration, it is named present speech, hence called wisdom; because there is seeking, it is called seeing. Just as when contemplating form inside superior concentration, wisdom and vision, seeking, and discerning the resembling form inside concentration are similar to form outside concentration, it is also the seeking and discerning of form outside concentration; hence it says "it is also thus."