俱舍論疏 28.71

28.71

論「故所立因無不成過」，總結上言。以無色故名無色，因非不成過。汝宗不許，自違理、教。汝既違教，我非不成。

The Śāstra says: "Therefore, the established reason is free from the fallacy of being unestablished (asiddha)," which summarises the above statement. Because it lacks form, it is called "formless"; thus the reason is not flawed by being unestablished. That your school does not accept it goes against reason and teaching. Since you go against the teaching, our [reason] is not unestablished.