俱舍論頌疏論本 20.16

20.16

釋曰：上兩句證，下兩句結宗。三世有由說者，三世實有，由經說故。經言：「苾芻當知：若過去色非有，不應多聞聖弟子眾勤修厭捨；以過去色是有故，應多聞聖弟子眾勤修厭捨。若未來色非有，不應多聞聖弟子眾勤斷欣求；以未來色是有故，應多聞聖弟子眾勤斷欣求。」

The explanation says: The upper two lines provide proof; the lower two lines conclude the tenets. "The existence of the three time-periods is due to teaching": the three time-periods are real existents because of what the sūtra teaches. The sūtra states: "Monks, you should know: if past form did not exist, the assembly of noble disciples of wide learning should not diligently cultivate revulsion and detachment toward it; because past form exists, the assembly of noble disciples of wide learning should diligently cultivate revulsion and detachment toward it. If future form did not exist, the assembly of noble disciples of wide learning should not diligently sever delight and seeking [for it]; because future form exists, the assembly of noble disciples of wide learning should diligently sever delight and seeking [for it]."