四明十義書 1.136

1.136

何者？且如《義例》云修觀次第必先內心。內心若淨，以此淨心遍歷諸法。既云若淨，故知觀未成時則內心未淨，觀若成則內心淨，故云內心若淨。類彼方等直云以正觀心，安可得同耶？

Why? For example, the Yili states: 'In the sequence of cultivating contemplation, one must first [contemplate] the inner mind. If the inner mind is purified, one uses this pure mind to universally traverse all dharmas.' Since it says 'if it is purified', we know that when contemplation is not yet completed, the inner mind is not yet purified; if contemplation is completed, the inner mind is purified; hence it says 'if the inner mind is purified'. How could this be the same as the Vaipulya directly saying 'with the direct contemplation mind'?