俱舍論頌疏論本 25.73

25.73

The explanation says: 'In the first dhyāna are all of them' means that relying on the first dhyāna, all thirty-seven are complete. As for the statement 'all of them; the preparatory stage lacks the faculty of joy', relying on the unarrived stage, there are only thirty-six, because the faculty of joy is excluded: because in the threshold stage one proceeds with strenuous effort, and because one still has doubt and hesitation regarding the phenomena of the lower ground, there is no joy.