大般涅槃經義記 5.224

5.224

上來四段合為第一，明佛無著自不見轉。自下第二明佛體常，所以無轉，文中可知。

The preceding four sections together form the first [part], explaining that the Buddha is free from attachment and does not himself see any turning. From here below, the second [part] explains that the Buddha's essence is eternal, which is why there is no turning; this is easily understood from the text.