大般涅槃經集解 49.20

49.20

案僧亮曰：如意說名自在，於自在中分作變化。初對凡夫，故言不爾。

Sengliang states: The supernormal base is called mastery; within mastery, it branches into transformations. At first, contrasting with ordinary beings, it therefore says 'not so'.