坐禪三昧經 2.96

2.96

Answer: "If one were to speak of the 'truth of impermanence,' there would again be doubts; there would also be doubts regarding the truth of duḥkha and the truth of non-self—they share the same difficulty. Furthermore, if one were to say 'the truth of impermanence,' there would be no fault; with 'the truth of emptiness and non-self,' there would also be no fault. But if one were to say 'the truth of impermanence, duḥkha, emptiness, and non-self,' it would be burdensome to say; therefore, among the four, only one is spoken."