大般涅槃經義記 9.166

9.166

自下第四約之顯法。文別有四：一牒其所問。玄呵諍者顛倒因緣不得正見，是故不能自利利他。二明己隨物不得定說。三「十方」下，舉他類己。於中，初明一切諸佛化生不同故說十二，次明十二為他非自，下結諸佛隨解異說名具解力。四佛自彰己具足根解二種力故，知人現未斷善及脫。先牒二力，次辨，後結。以具二力，故名「力士」。

From here below is the fourth [section], revealing the Dharma with reference to this. The text has four parts: First, citing what was asked. It profoundly reproves those who dispute as having inverted causes and conditions and failing to attain right view, and therefore being unable to benefit themselves and benefit others. Second, explaining that because he accords with beings, he cannot make determinate statements. Third, "The ten directions..." and below adduces others to analogize with himself. Therein, it first explains that because all buddhas transform beings differently, they speak the twelve [divisions of scripture]; next, that the twelve are for others and not for oneself; below, it concludes that the buddhas' speaking differently in accordance with understanding is called possessing the power of understanding. Fourth, the Buddha himself manifests that because he fully possesses the two powers of faculties and understanding, he knows whether persons in the present and future will sever roots of wholesomeness and attain liberation. It first cites the two powers, next analyzes them, and then concludes. Because he fully possesses the two powers, he is named "malla" [strong man].