金剛經纂要刊定記 5.115

5.115

又徵意云：以何義故，令無我法之相？後釋意云：離一切相名為佛故，諸相雖多不逾我法。今此統收故云一切，斯則是相皆離為俱空也。俱空之理則名為佛，佛自此成故言勝也。人法二取其義可知。

Again, the intent of the query is: on what basis are they made free from the marks of self and phenomena? The latter intent of the explanation is: because being free from all marks is called a Buddha; though marks are many, they do not exceed self and phenomena. Here they are gathered comprehensively, hence it says "all"; this means that when all marks are abandoned, both are empty. The principle of both being empty is called a Buddha; since the Buddha is accomplished from this, it is called superior. The meaning of the two graspings of person and phenomena is evident.