瑜伽論記 5.130

5.130

又有四種心定心住者，簡別散地名心定，內住一境名心住，四種所知真實則是四諦。

Furthermore, regarding 'there are four kinds of mental concentration and mental abiding': distinguishing it from the dispersed levels is called 'mental concentration'; internally abiding on a single object is called 'mental abiding'. The four kinds of reality to be known are simply the four truths.