俱舍論記 28.128

28.128

「頌曰至受有差別」者，釋第二靜慮無有樂受，無餘三識故、心悅麁故，但名為喜，不名為樂。餘文可知。

"The verse says ... there are differences in feeling": this explains that the second dhyāna lacks the feeling of pleasure; because it lacks the other three consciousnesses and because its mental gladness is coarse, it is only called joy and is not called pleasure. The remaining text is understandable.