大般涅槃經集解 50.6

50.6

案僧亮曰：具四等成十功德，說行一周也。寶亮曰：第四功德，以十事為體。十事即是喜捨，自身決定是喜相，餘多是捨也。

Sengliang states: Possessing the four equalities, one accomplishes the ten merits; this explains a complete cycle of practice. Baoliang states: The fourth merit takes ten matters as its essence. The ten matters are sympathetic joy and equanimity: being decisive about one's own body is the sign of sympathetic joy; the rest are mostly equanimity.