妙法蓮華經玄義 4.7

4.7

根本淨禪，不隱沒、無垢、有記，與上相違。此又三品，謂六妙門、十六特勝、通明等也。

Fundamental pure dhyāna is non-submerged, undefiled, and determinate, contrary to the above. This also has three grades: namely the six subtle gates, the sixteen superior attainments, the thorough clarity, and so forth.