金剛經纂要刊定記 4.109

4.109

答：「前令不住用心，此令住於不住。不住而住即住真空，如鳥不住空却能住空，若住於空即不住空也。故魏經云：『但應如是行於布施。』」

Answer: "Previously it commanded not abiding in the application of the mind; here it commands abiding in non-abiding. Abiding without abiding is precisely abiding in true emptiness. It is like a bird that does not dwell in the sky and yet can stay in the sky; if it were to dwell in the sky, it could not stay in the sky. Therefore the Wei sūtra states: 'One should only practice giving in this manner.'"