四明十義書 1.33

1.33

況本立直顯心性，故義同理觀。且心性之名，《釋籤》定判在因。今既自甘十種三法是果佛所證，則全非直顯心性。既非直顯心性，則自不同理觀。

Moreover, his original position was that because it directly reveals the mind-nature, in meaning it is the same as principle contemplation. But the name 'mind-nature' is definitively judged in the *Shigian* to belong to the causal stage. Now, since he has already willingly conceded that the ten kinds of threefold dharmas are what is realized by the fruit Buddha, it is entirely not a direct revelation of the mind-nature. Since it is not a direct revelation of the mind-nature, it naturally is not the same as principle contemplation.