妙法蓮華經玄義 4.134

4.134

五、頂法者，似解轉增，得四如意定。十六諦觀，轉更分明。在煗之上，如登山頂，觀矚四方，悉皆明了，故名頂法。

5. The peak dharma: the simulated understanding increases further, and one attains the four concentrations of psychic power. The contemplation of the sixteen truths becomes even clearer. Being above heat, it is like climbing to a mountain peak where one gazes in all four directions, everything being clearly visible; hence it is called the peak dharma.