大方廣佛華嚴經隨疏演義鈔 33.46

33.46

疏「無所有言該上業果」者，案文但云作者無所有，以偈文窄故，實乃作者所作皆無所有。

Regarding the commentary's "the words 'have nothing at all' cover the karma and result above": examining the text, it only says that the agent has nothing at all; because the text of the stanza is brief, in reality both the agent and what is done have nothing at all.