摩訶止觀 3.243

3.243

欲入真諦，須知無為常不變易；欲入實相，亦知常住一相不變。知常語同，大小則異。故三藏止觀不知圓、實，不違經。

Wishing to enter the absolute truth, one must know that the unconditioned is eternal and unchanging; wishing to enter true reality, one also knows that it is eternally abiding, of a single characteristic and unchanging. The phrase 'knowing the eternal' is identical, but the great and small differ. Therefore, that the Tripiṭaka calming and contemplation does not know the perfect and the real does not contradict the sūtras.