瑜伽論記 6.110

6.110

釋中有四喜；一、於四證淨生喜；二、於因增上生及決定勝生喜；三、無嫉妬故於他同類得此二事者亦生歡喜；四、念有恩者發生歡喜。

Within the explanation there are four joys: 1. giving rise to joy regarding the four verified confidences; 2. giving rise to joy regarding higher rebirth and definite excellence as causes; 3. due to lack of envy, also giving rise to joy when others of one's own kind attain these two matters; 4. recollecting those who have been beneficent and generating joy.