註華嚴經題法界觀門頌 2.121

2.121

隨流雖得妙，入海水波潛。義曰：真理者，是五門不變理也。即事者，是三門隨緣事也。故成此門不變即隨緣義也。則廢己同他，泯其理也。即真該妄末，雖空而非斷也。《觀》云「是故此理，舉體皆事方為真理。如水即波，無動而非濕。故即水是波也。」

Following the flow, though wondrous, entering the sea, water's waves submerge. Meaning: "True principle" is the unchanging principle of the fifth gate. "Being phenomena" refers to phenomena conforming to conditions of the third gate. Therefore, this establishes the meaning of the unchanging being identical to conforming to conditions. That is, discarding oneself to identify with the other, its principle is eliminated. This is the true encompassing the false extremity; though empty, it is not annihilation. The Contemplation says: "Therefore, as for this principle, only when its entire substance is phenomena is it true principle. Just as water is identical to waves, there is no motion that is not moisture. Hence, water is identical to waves."