註華嚴經題法界觀門頌 2.139

2.139

但得本，莫愁末。此頌波中濕者，事法體空而即理也。鏡裏顏者，體空也。既以觀智了物即真理，何更煩勞推問體空之義也。

Simply attain the root, do not worry about the branches. In this verse, "the wetness within the waves" is phenomenal dharmas being empty of substance and identical to principle. "The face in the mirror" is the emptiness of substance. Since one understands that things are identical to true principle through contemplative wisdom, why bother to investigate the meaning of emptiness of substance any further?