說無垢稱經疏 6.326

6.326

贊曰：三讚歎深遠。有四：初略總顯說法難窮、次設指陳聽聞難盡、三顯諸佛方能了說、四總結成德辨難思。此初也。

The Commentary says: Third is praising the profundity and vastness. There are four parts: first, briefly and generally showing that expounding the Dharma is difficult to exhaust; next, hypothetically pointing out that listening and hearing is difficult to exhaust; third, showing that only Buddhas can fully expound it; fourth, generally concluding with the unfathomability of the accomplished virtues and eloquence. This is the first [part].