大方廣佛華嚴經隨疏演義鈔 68.8

68.8

疏「初離三想」者，離彼我想為一離，作者想為二離，受者想為三離。有無想雖通二門，無願一門多約離有。

Regarding the commentary's "First, separating from three notions": separating from the notion of that self is the first separation; the notion of an agent is the second separation; the notion of an experiencer is the third separation. Although the notions of existence and non-existence apply to both gates, the single gate of wishlessness mostly concerns separating from existence.