釋禪波羅蜜次第法門 3.136

3.136

第二、約觀門明四修者：一、事觀，所謂安般、不淨觀等，即是事修；二、理觀，所謂空、無相等觀，即是理修；三、事理觀，所謂雙觀二諦，即是事理修；四、非事非理觀，所謂中道正觀，即是非事非理修。今為欲成前止門發禪不定義故，但約四止以明修，一一修中各有四種發禪不定，是故四種修中合有十六種發禪不定。行者善識此相，即自了知事理兩修通發一切諸禪三昧，心無疑惑。

Second, explaining the four cultivations in terms of the gate of contemplation: 1. Phenomenal contemplation, namely ānāpāna, contemplation of impurity, and so forth, which is phenomenal cultivation; 2. Principle contemplation, namely contemplations of emptiness, signlessness, and so forth, which is principle cultivation; 3. Phenomenal-and-principle contemplation, namely dual contemplation of the two truths, which is phenomenal-and-principle cultivation; 4. Neither-phenomenal-nor-principle contemplation, namely the correct contemplation of the Middle Way, which is neither-phenomenal-nor-principle cultivation. Now, in order to establish the aforementioned meaning of the indeterminate arising of dhyāna from the gate of cessation, cultivation is explained solely in terms of the four cessations; within each cultivation there are four kinds of indeterminate arising of dhyāna, and therefore within the four kinds of cultivation there are altogether sixteen kinds of indeterminate arising of dhyāna. When the practitioner skillfully recognizes these marks, they will naturally understand that both phenomenal and principle cultivations commonly give rise to all dhyānas and samādhis, without doubts in mind.