大方廣佛華嚴經隨疏演義鈔 37.26

37.26

疏「知鬼本無舉體是木」者，釋下半也。約法云知妄所執理本是無，但是依圓。為舉體是木，則見依圓，故名見木。故知妄本自真，則鬼是木見，佛則清淨，名為見木。

Regarding the Commentary's 'Knowing the ghost is fundamentally non-existent, its entire substance being the tree': this explains the lower half. In terms of dharmas, it means knowing that what is delusively grasped is fundamentally non-existent in principle, but is merely the other-dependent and consummate. Because its entire substance is the tree, one sees the other-dependent and consummate, hence it is called 'seeing the tree'. Therefore one knows that delusion is fundamentally from the true, so the ghost is the seeing of the tree, and the Buddha is pure, which is called 'seeing the tree'.