俱舍論頌疏論本 17.53

17.53

後二三三果者，後謂無記，善、惡後故。此無記業以善法為二果，以不善法為三果，以無記法亦為三果。以善法為二果者，謂士用、增上。以不善法為三果者，除異熟及離繫。問云：「何不善與無記為等流？」答：「身、邊、無記為同類因，以諸不善為等流果。」以無記法為三果者，除異熟及離繫。

Regarding "the last has two, three, three fruits": "the last" refers to the indeterminate, because it comes after the wholesome and unwholesome. This indeterminate karma takes wholesome phenomena as two fruits, unwholesome phenomena as three fruits, and indeterminate phenomena also as three fruits. Taking wholesome phenomena as two fruits refers to personal endeavor and sovereignty. Taking unwholesome phenomena as three fruits excludes ripening and disconnection. Question: "How can the unwholesome be an outflow of the indeterminate?" Answer: "The indeterminate view of self and extreme views act as similar cause, taking the various unwholesome [defilements] as outflow fruit." Taking indeterminate phenomena as three fruits excludes ripening and disconnection.