大般涅槃經集解 32.72

32.72

案僧宗曰：第五重結釋也。寶亮曰：第五階捉苦以結句也。明如來非是有漏，湛然安樂，所以故是實也。

Sengzong states: The fifth tier concludes and explains. Baoliang states: The fifth stage grasps suffering to conclude the passage. It clarifies that the Tathāgata is not contaminated, but serene and peaceful bliss, which is why he is real.