瑜伽論記 4.95

4.95

基云：今說阿羅漢究竟離三界欲，作五種觀故，謂離無色染加行究竟作意，前加行道是觀察作意故，准此後文正斷道中，釋其心善逝。

Ji says: It now speaks of the arhat who has completely abandoned the desires of the three realms by performing five kinds of contemplation; that is, the preparatory ultimate attention for abandoning the taints of the formless realm, because the preceding preparatory path is the attention of examination. By analogy with this, in the subsequent text on the path of actual abandonment, it explains their mind 'having gone well'.