金剛般若波羅蜜經註解 1.139

1.139

佛之報身，遠離諸漏，名之為非；尊崇奇特，名之為大。佛之問意，以聖人之法既無為、無取，所得報身豈非有取？恐有此疑，故設喻為問。

The Buddha's reward body is far removed from all outflows, so it is named 'non'; it is venerated and extraordinary, so it is named 'large'. The intent of the Buddha's question is: since the noble ones' dharmas are unconditioned and ungrasped, is not the attained reward body grasped? Fearing that there might be this doubt, he set up the metaphor to question.